What is the molarity of a solution that contains 25.3 g of NaCl in 111 mL of solution?

-14.6 M
-3.90 M
-0.25 M
-5.52 M

Answers

Answer 1

Answer:

"3.90M" if approximate

Explanation:

if u didn't understood why i converted volume from millilitres to litre then refer defination of Molarity.

hope it help:)

What Is The Molarity Of A Solution That Contains 25.3 G Of NaCl In 111 ML Of Solution?-14.6 M -3.90 M

Related Questions

Hello please someone help me with this

Hello please someone help me with this

Answers

An equation is formed of two equal expressions. The value of x in the given equation can be -5.237 or 3.437.

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

In the given equation, the value of x can be found as shown below,

x²/(0.001 - x) = 1.8 × 10⁻⁴

x²/(0.001 - x) = 1.8/10000

x² · 10000 = (0.001 - x) · 1.8

\(x=\dfrac{-0.00018+\sqrt{0.0000007524}}{2},\:x=\dfrac{-0.00018-\sqrt{0.0000007524}}{2}\)

x = -5.237, 3.437

Hence, the value of x in the given equation can be -5.237 or 3.437.

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Consider the balanced reaction:

C3H8 + 5 O2 → 3 CO2 + 4 H2O

How many mol of C3H8 must be consumed via this reaction to produce a partial pressure of 3.68 atm of CO2 in a 4.00 L container at 355 K?

Answers

The number of moles of C₃H₈ that must be consumed via the given reaction is 0.168 mole

How do I determine the number of mole of C3H8 consumed?

We'll begin by obtaining the mole of CO₂ produced. Details below:

Pressure (P) = 3.68 atmVolume (V) = 4 LTemperature (T) = 355 K Gas constant (R) = 0.0821 atm.L/Kmol mole of CO₂ (n) =?

PV = nRT

3.68 × 4 = n × 0.0821 × 355

Divide both sides by (0.0821 × 355)

n = (3.68 × 4) / (0.0821 × 355)

n = 0.505 mole

Finally, we shall determine the mole of C₃H₈ consumed by the reaction. This is illustrated below:

C₃H₈ + 5O₂ -> 3CO₂ + 4H₂O

From the balanced equation above,

3 moles of CO₂ were obtained from 1 mole of C₃H₈

Therefore,

0.505 mole of CO₂ will be obtained from = (0.505 × 1) / 3 = 0.168 mole of C₃H₈

Thus, number of mole of C₃H₈ consumed is 0.168 mole

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write anode and cathode in Zn-Ag galvanic cell​

Answers

Explanation:

Zinc is the anode (solid zinc is oxidised). Silver is the cathode (silver ions are reduced).

By convention in standard cell notation, the anode is written on the left and the cathode is written on the right. So, in this cell: Zinc is the anode (solid zinc is oxidised). Silver is the cathode (silver ions are reduced).

Rank each structural feature according to increasing energy difference between the ground state and excited state electrons. (lowest on top)

Answers

The structural feature according to increasing energy difference between the ground state and excited state electrons is given as (i) conjugated polyene (ii) conjugated diene (iii) isolated diene.

Generally, chemical energy is defined as the energy which is stored in the bonds of chemical compounds (molecules and atoms). Chemical energy is released in the chemical reaction and mostly produces heat as a by-product which is known as an exothermic reaction.

The ground state of an electron is defined as the energy level that it usually occupies, is the state of lowest energy for that electron. There is also a maximum energy present that each electron can have and still be part of its atom.

Generally, the excited state describes an atom, ion or molecule with an electron in a higher than normal energy level than its ground state.

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Which reason best explains why metals are malleable

Because they have delocalized electrons

Because they have localized electrons

Because they have ionic bonds

Because they have rigid bonds

Answers

Answer:

A.) because they have delocalized electrons

Explanation:

This is right on edg. 2020

Answer:

Bruzaaubrey is 100% correct

Explanation:

the proper answer is: "Because they have delocalized electrons(A)"

Make sure to mark bruzaaubrey brainliest :)

Calculate the volume of a balloon that can hold 113.4 g of nitrogen dioxide, NO2 gas at STP-

Answers

Answer:

55.18 L

Explanation:

First we convert 113.4 g of NO₂ into moles, using its molar mass:

113.4 g ÷ 46 g/mol = 2.465 mol

Then we use the PV=nRT formula, where:

P = 1atm & T = 273K (This means STP)n = 2.465 molR = 0.082 atm·L·mol⁻¹·K⁻¹V = ?

Input the data:

1 atm * V = 2.465 mol * 0.082atm·L·mol⁻¹·K⁻¹ * 273 K

And solve for V:

V = 55.18 L

mass of 1×10^25 molecules of water​

Answers

Answer:

1.E25 it is the answer the answer to mass of 1×10^25 molecules of water​

Explanation:

this is just EXPLINATION find your answer using this

first divide the number of molecules by Avogadro's number 6.022*10^25

you will

l get no. of Moles of water

multiply the no. of Moles with mass of 1 Mole of water 18g per mole

if get answer you comment

you should try on your own you will understand better

How many atoms are in 12 g of Carbon-12 (12C)?

Answers

There are approximately 6.022 × 10^23 atoms in 12 grams of Carbon-12 (12C).

The number of atoms in a given amount of a substance can be calculated using Avogadro's number, which represents the number of atoms or molecules in one mole of a substance. Avogadro's number is approximately 6.022 × 10^23.

Carbon-12 is a specific isotope of carbon, with an atomic mass of 12 atomic mass units (amu). One mole of Carbon-12 has a mass of 12 grams. Since one mole of any substance contains Avogadro's number of particles, in the case of Carbon-12, it contains 6.022 × 10^23 atoms.

Therefore, if we have 12 grams of Carbon-12, which is equal to one mole, we can conclude that there are approximately 6.022 × 10^23 atoms in this amount of Carbon-12.

In summary, 12 grams of Carbon-12 contains approximately 6.022 × 10^23 atoms. Avogadro's number allows us to relate the mass of a substance to the number of atoms or molecules it contains, providing a fundamental concept in chemistry and enabling us to quantify and understand the microscopic world of atoms and molecules.

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The half-life for a first-order reaction is 32 s. What was the original concentration if, after 2.0 minutes, the reactant concentration is 0.062 M?​

Answers

Answer:

0.834 M.

Explanation:

Hello!

In this case, since this is a first-order reaction, we can infer that the half-life and the rate constant are related via:

\(t_{1/2}=\frac{ln(2)}{k}\)

Thus, we are able to compute the rate constant:

\(k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{32s}\\\\k=0.0217s^{-1}\)

Next, since we have the resulting concentration of the reactant and we need the initial one, we proceed as shown below with the rate law:

\(A=A_0exp(-kt)\\\\A_0=\frac{A}{exp(-kt)} \\\\A_0=\frac{0.062M}{exp(-0.0217s^{-1}*2.0min*\frac{60s}{1min} )}\\\\A_0=0.834M\)

Best regards!

Calculate the molality of the following solution: 3.20 moles of ethylene glycol (C2H6O2) in 3746 g of water

Answers

To calculate the molality (m) of a solution,

We will need to divide the number of moles of solute (n) by the mass of the solvent (in kg).

First, we will need to convert the mass of water from grams to kilograms:

mass of water = 3746 g = 3.746 kg

Next, calculate the number of moles of ethylene glycol:

moles of ethylene glycol = 3.20 moles

After finding the number of ethylene glycol, we will use the formula to calculate the molality:

m = moles of solute / mass of solvent (in kg)

m = 3.20 moles / 3.746 kg

Simplifying this calculation, we get:

m = 0.853 mol/kg

Therefore, the molality of the solution is 0.853 mol/kg.

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The exhaust from car engines spreads throughout our atmosphere and adds to pollution. What is this an example of?


A.

An increase in enthalpy


B.

An increase in thrust


C.

An increase in thermodynamics


D.

An increase in entropy

(D is the correct answer!)

Answers

Answer: When exhaust from car engines spreads throughout our atmosphere and adds to pollution then it is an example of increase in entropy.

Explanation:

A degree of randomness in the molecules of a substance is called entropy.

When exhaust from car engines spreads throughout our atmosphere then it means the molecules are moving at a faster speed due to which they spread into the atmosphere rapidly.

This means that the entropy of exhaust is increasing.

Thus, we can conclude that when exhaust from car engines spreads throughout our atmosphere and adds to pollution then it is an example of increase in entropy.

An increase in entropy

A mixture of 0.327 M Cl 2 , 0.579 M F 2 , and 0.839 M ClF is enclosed in a vessel and heated to 2500 K . Cl 2 ( g ) + F 2 ( g ) − ⇀ ↽ − 2 ClF ( g ) K c = 20.0 at 2500 K Calculate the equilibrium concentration of each gas at 2500 K .

Answers

Cl2 (g) + F2 (g) ⇌ 2ClF (g)

Kc = [ClF]^2 / [Cl2][F2]

Let x be the change in concentration of ClF, Cl2, and F2 at equilibrium. Then the equilibrium concentrations can be expressed as:

[ClF] = 0.839 M + x

[Cl2] = 0.327 M - x

[F2] = 0.579 M - x

Substituting these expressions into the equilibrium constant expression and solving for x gives:

20.0 = ([0.839 + x]^2) / ([0.327 - x][0.579 - x])

Expanding the numerator and denominator and simplifying, we get:

20.0 = (0.704x^2 + 3.321x + 0.702) / (-0.189x^2 + 0.463x - 0.190)

Multiplying both sides by the denominator and rearranging, we get a quadratic equation:

0.189x^2 - 3.880x + 3.032 = 0

Using the quadratic formula, we find that:

x = 7.68 × 10^-2 M

Substituting this value back into the expressions for the equilibrium concentrations gives:

[ClF] = 0.839 M + 7.68 × 10^-2 M = 0.917 M

[Cl2] = 0.327 M - 7.68 × 10^-2 M = 0.250 M

[F2] = 0.579 M - 7.68 × 10^-2 M = 0.501 M

Therefore, the equilibrium concentrations of ClF, Cl2, and F2 at 2500 K are 0.917 M, 0.250 M, and 0.501 M, respectively.

Which seasons in Atlanta GA have worst AQI

Answers

In Atlanta, GA, certain seasons are associated with poorer air quality due to various factors such as weather conditions, human activities, and geographical location.

Typically, the seasons with the worst AQI in Atlanta, GA, are summer and early fall. This is primarily due to the combination of high temperatures, stagnant air masses, and increased pollution from various sources.

During the summer months, Atlanta experiences hot and humid weather, which can contribute to the formation of ground-level ozone. Ozone is a harmful pollutant that is created when pollutants from vehicles, power plants, and industrial activities react with sunlight and heat. High levels of ozone can cause respiratory issues and other health problems.

In addition to ozone, Atlanta also experiences increased levels of particulate matter (PM) during the summer and early fall. PM refers to tiny particles suspended in the air, which can come from sources such as vehicle exhaust, industrial emissions, and wildfires.

These particles can be inhaled into the lungs and can have detrimental effects on respiratory health.

It's important to note that air quality can vary from year to year and is influenced by various factors. Local regulations, weather patterns, and changes in pollutant emissions can all impact the AQI during different seasons.

Monitoring air quality reports and taking necessary precautions such as reducing outdoor activities during times of poor air quality can help individuals stay informed and protect their health.

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The following two organic compounds are structural isomers to each other. Carefully identify and justify the structural isomers type (skeletal, functional, or positional) with their common molecular formula

The following two organic compounds are structural isomers to each other. Carefully identify and justify

Answers

Structural isomers are molecules with the same molecular formula but with different structural formulae. This means that they have the same number and types of atoms, but they are arranged differently. The following two organic compounds are structural isomers of each other.

Carefully identify and justify the structural isomers type (skeletal, functional, or positional) with their common molecular formula.Common molecular formula: C6H14Structural isomers:(i) Hexane: Hexane is a straight-chain alkane with six carbon atoms and no double bonds or rings. The carbon atoms are linked together in a linear or straight-chain configuration in the skeletal isomer. The skeletal isomer differs in terms of the arrangement of atoms in its molecule. This indicates that it is a skeletal isomer.(ii) 2-methylpentane: It is a branched-chain alkane with six carbon atoms and no double bonds or rings. It differs from the first molecule in terms of the location of a methyl group on the second carbon of the five-carbon chain, rather than a straight six-carbon chain. This difference is due to a change in the positioning of the carbon atoms in the molecule. As a result, it is a positional isomer, as it differs by the position of the functional group or substituent. Therefore, the skeletal and positional isomerism types are present between these two compounds.

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Which statement describes a step in the formation of an ionic bond?

Answers

Answer:

Which statement describes a step in the formation of an ionic bond? An attraction occurs between two ions that have the same charge.

Explanation:

Tristan wraps some gifts and then brings them to the post office where they are delivered to people in different parts of the country. Which organelle is Tristan most like?

Answers

Answer:

Tristan wraps some gifts and then brings them to the post office where they are delivered to people in different parts of the country. Which organelle is Tristan most like?

Answer: Tristan is most like the Golgi Body

Explanation:

List the 2 pKa's for H2SO4

Answers

No pKa1 because it is strong acid, pKa2 = 1.99

How do you turn the numbers
4.5 x 10^6
3.17 x 10^4
9.01 x 10^-4
8.6 x 10^-7
3.1 x 10^3
3.1 x 10^-3
7.9 x 10^6
2 x 10^1
2 x 10^-1
1.1 x 10^3
From scientific notation into standard notation.

Answers

4,500,000

31,700

0.000901

0.00000086

3,100

7,900,000

20

0.2

1,100

To get the answers you just have to move the decimal to the right how ever many times the power of 10 is (if the number is negative you move the decimal to the left) eg. 2 x 10^1: you move the decimal to the right once and it becomes 20. eg. 2 x 10^-1 you move the decimal to the left once and it becomes 0.2.
I hope that helped

Use the following information to answer questions 1 and 2.
Kate had a Styrofoam cooler, a plastic cooler, and an insulated bag.
insulated bag
Styrofoam™ cooler plastic cooler
She wanted to know which container would keep drinks coolest for the longest period of
time. She chilled three identical glasses of water to 40°F. Then, she placed one of the glasses
in each container and closed the containers. During the next two hours, she opened each
container every
15 minutes and measured the temperature of the water. The results of her
experiment appear on the graph below.
Results of Kate's Experiment
Temperature (°F)
inio A All
64
62
60
58
56
54
52
50
48 awon as Isla
46
44
42
40
15
30
.............
5.2C; 5.2D; 5.2G; 5.5A (H)
tadion
T
di casas
1. Which of the following could Kate
blo Fabritodistam
conclude from her results?
e
TM
45
60
75
Time Elapsed (minutes)
A All of the carriers had equal
gnis insulation. srl: looo a
Jaioa
B The water became warmer in each
ams of the containers.
C The Styrofoam cooler kept the
15qcq water coolest over two hours.
STA
D The insulated bag is the best
container for storing cool drinks.
Deplo22ib
90
105
omsins....
Styrofoam™ cooler
-
- plastic cooler
1516W insulated bag
boa gniled (A)
aldds 8
120
Insed oil O
bas? a
5.2E; 5.5A (H)
(3) 82.208.8

Answers

Answer: The Styrofoam cooler kept the water coolest over two hours.

Explanation: From the graph, it is clear that the temperature of the water in the Styrofoam cooler remained the lowest throughout the experiment, and hence, it can be concluded that the Styrofoam cooler kept the water coolest over two hours. The temperature of the water in the insulated bag and plastic cooler both increased more rapidly than in the Styrofoam cooler, indicating that they are not as effective at keeping drinks cool. Therefore, the answer is option C.

the relative formula masses (Mr) are: CaCo3 = 100; CaO =56 ; Co2=44

describe how this experiment could be used to provide evidence for the law of conservation of mass.

[6 marks]
include your answer:

-method

-which measurements should eb taken

-how the student could show evidence for the conservation for mass

Answers

The law of conservation of mass states that in a chemical reaction, the total mass of the reactants is equal to the total mass of the products. To provide evidence for this law, we can perform an experiment in which calcium carbonate (\(CaCO_3\)) is decomposed to produce calcium oxide (CaO) and carbon dioxide (\(CO_2\) ), and then measure the masses of the reactants and products.

Method:

Weigh a sample of \(CaCO_3\) using a balance.

Heat the \(CaCO_3\) in a crucible until it decomposes to CaO and \(CO_2\). The \(CO_2\) gas will escape, leaving only CaO in the crucible.

Allow the crucible to cool and then weigh it again to determine the mass of the CaO produced.

Collect the \(CO_2\) gas that is released during the reaction in a gas syringe or other collection device. Measure the volume of \(CO_2\) gas produced, and calculate its mass using its molecular weight.

Which measurements should be taken:

The following measurements should be taken:

The mass of the \(CaCO_3\) used as a reactant.

The mass of the CaO produced as a product.

The volume of \(CO_2\) gas produced during the reaction.

The temperature and pressure of the \(CO_2\) gas to allow for the calculation of its mass.

How the student could show evidence for the conservation of mass:

To show evidence for the law of conservation of mass, the student can compare the mass of the \(CaCO_3\) used as a reactant to the total mass of the products, which includes the mass of CaO produced and the mass of \(CO_2\) gas released.

The sum of the masses of CaO and \(CO_2\) should be equal to the mass of the \(CaCO_3\) used as a reactant, within experimental error. This will provide evidence that the mass of the reactants is conserved and equals the mass of the products, as required by the law of conservation of mass.

Additionally, the student could calculate the theoretical yield of CaO and CO2 based on the balanced equation for the reaction, and compare this to the actual yield obtained from the experiment. Any difference between the theoretical and actual yields could be due to experimental error, but the comparison can still provide additional evidence for the conservation of mass.

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What volume is occupied by 0.104 mol of helium gas at a pressure of 0.91 atm and a temperature of 314 K ?

Answers

Answer:

The volume will be "2.95 L".

Explanation:

Given:

n = 0.104

p = 0.91 atm

T = 314 K

Now,

The Volume (V) will be:

= \(\frac{nRT}{P}\)

By putting the values, we get

= \(\frac{0.104\times 0.0821\times 314}{0.91}\)

= \(\frac{2.6810}{0.91}\)

= \(2.95 \ L\)

Ex 1.4 You are trying to decide which of two automobiles to buy. The first is USA- made, which costs RM 85,000 and has the rated gasoline mileage of 22.5 miles/gal. The second car is a hybrid and of European manufacture, which costs RM 100,000, and has the rated mileage of 28.5 km/L. If the cost of petrol is RM 2.05/L and if the cars actually deliver their rated gas mileage, estimate how many miles you would have to drive for the lower fuel consumption of the second car to compensate for the higher cost of this car?​

Answers

104895.10 kilometers need to drive for the lower fuel consumption of the second car to compensate for the higher cost of this car.

For calculating the number of  miles  we need the compare the cost equation of both cars.

Considering x be the number of kilometers, since the mileage of the USA-made car is (22.5 * 1.609) / 3.785 = 19.56-kilo meter per litre, and the cost of petrol  per Litres = 2.05 .

SO for the USA made the pertrol cost is 2.05 / 9.56 = $0.214per km

and for the european made car is  2.05 / 28.5 = $0.071 per km

since the total cost is nothing like the sum of the purchase price and the fuel cost SO,  

for the  USA  made , the total  cost  is  = 85,000  + 0.214x and

for the  eurpoean car is   = 100,000 + 0.071x

By comparing the equation by considering the total cost for a car  to be equal so

85,000  + 0.214x =100,000 + 0.071x

=>100,000- 85,000 = 0.214x- 0.071x

=>15000= 0.143x

=>x=  104895.10

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0.2g of sand in two-third in liter of ethanol . What is the concentration in g per dm cube​

Answers

The mass concentration of sand in the ethanol solution is 0.299 g/dm³.

What is the concentration in grams per dm³?

To find the concentration in grams per cubic decimeter (g/dm³), we first need to convert the volume from liters to cubic decimeters (dm³). Since 1 liter is equal to 1 cubic decimeter, we can directly convert the volume.

Given:

Mass of sand = 0.2 g

Volume of ethanol = two-thirds liter

Converting volume to dm³:

1 liter = 1 cubic decimeter

two-thirds liter = (2/3) cubic decimeter = 0.67 dm³ (rounded to two decimal places)

Now we can calculate the concentration in g/dm³ by dividing the mass of sand by the volume in dm³:

Concentration = Mass / Volume

Concentration = 0.2 g / 0.67 dm³

Concentration ≈ 0.299 g/dm³ (rounded to three decimal places)

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Is A fireplace poker glows red when you heat it in the fire a Chemical or
Physical change?

Answers

A fireplace poker glowing red when you heat it in the fire is referred to as a physical change.

What is Physical change?

This change is a reversible one in the physical properties of a substance such as the size, color etc. Physical change doesn't alter or change the chemical composition of a substance and no new products are formed in this process.

A fireplace poker glowing red when you heat it in the fire doesn't change the composition and is reversible when allowed to cool down which is why physical change was chosen as the most appropriate choice.

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The fluoride in many toothpaste is tin (ll) fluoride produced by the reaction of tin and gaseous hydrogen fluoride.

Write this in a word and skeleton equation

Answers

Answer:

Word equation: Tin + Hydrogen fluoride → Tin (II) fluoride + Hydrogen gas

Skeleton equation: Sn + 2HF → SnF2 + H2

Please help with this one

Please help with this one

Answers

Answer:

15g

Explanation:

hope this helped

How many moles of sulfur dioxide (SO2) are required to produce 5.0 moles of sulfur (S) according to the following balanced equation? SO2 + 2H2S - 3S + 2H2O​

Answers

Answer:

1.67 moles

Explanation:

From the balanced equation of reaction:

                     \(SO_2 + 2H_2S -> 3S + 2H_2O\)

1 mole of sulfur dioxide, SO2, is required to produce 3 moles of sulfur, S.

If 1 mole SO2 = 3 moles S, then, how many moles of SO2 would be required for 5 moles S?

     Moles of SO2 needed = 5 x 1/3

                   = 5/3 or 1.67 moles

Hence, 1.67 moles of SO2 would be required to produce 5.0 moles of S.

Answer: 1.7

Explanation:

Measuring Physical Properties Lab Report

Instructions: In the Physical Properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in Tiny World. Record your observations and test measurements in the lab report below. You will submit your completed report.

Shape

Name and Title:

Include your name, instructor's name,
Objective(s):

In your own words, what was the purpose of this lab?

Hypothesis:

In this section, include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.

Procedure:

The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome.

Using the summary questions, clearly define the dependent and independent variables of the experiment. [Text Wrapping Break]

Answers

It can be done by only :-

I am mentioning steps to do .(Project works shouldnot be done by others or copied)

Step:-

First acquire all the necessary things required for the experiment.Then do the experiment.Then write down the things which you had obtained or observed in the experiment.Then at the end write the conclusion.

Answer:

Name: Construction for architecture.

Instructors name: Engineer Jason Mackel

Instruments: polymorphic clay bricks, 8 by 8 meter iron bars, 6 inch iron nails, hard glitters ground wood board, tiles and tile adhesive.

Observations:

• polymorphic clay bricks are a bit heavy but they are strong, not brittle. They stick with the adhesive applied.

• 8 by 8 iron bars are very strong with SWG > 108.

• Tile adhesive was so reluctant so we decided to put tiles aside.

Objectives:

» We got a great functionality floor which resists cracks

\(.\)

A solution is made by dissolving 38.81 grams of nickel (II) sulfate, NiSO4, in enough water to make 0.467
liters of solution. Calculate the molarity of this solution.

Answers

The molarity of the NiSO₄ solution made by dissolving 38.81 grams of nickel (ii) sulfate, NiSO₄, in enough water to make 0.467 liters of solution is 0.535 M

How do i determine the molarity of the solution?

First, we shall obtain the mole of 38.81 grams of nickel (ii) sulfate, NiSO₄. Details below:

Mass of NiSO₄ = 38.81 grams Molar mass of NiSO₄ = 154.75 g/molMole of NiSO₄ = ?

Mole of NiSO₄ = mass / molar mass

= 38.81 / 154.75

= 0.25 mole

Now, we shall determine the molarity of the solution. Details below:

Mole of NiSO₄ = 0.25 moleVolume of solution = 10.467 LMolarity of solution = ?

Molarity of solution = mole / volume

= 0.25 / 0.467

= 0.535 M

Thus, the molarity of the solution is 0.535 M

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Which of the following is true regarding the atoms involved in a chemical reaction?

Answers

is there a picture to this question?
Other Questions
Scientists studied the teeth on the fossils of an ancient fish. The oldest fossils indicate the fish mostly ate plankton. The teeth on more recent fossils indicate the fish began to eat larger plants. Which hypothesis does this observation best support?. Which ecological relationship is best represented by this graph?Note: Species A's population slightly decreases and Species B's population significantly increases over time.1: Mutualism2: Commensalism3: Parasitism What is the volume (in liters) of a 5.52 gram sample of O2 at STP? Select the sentence that clearly links a modifying word, phrase, or clause to the word it modifies.Waiting to be fed, the students took food to the animals.The students from the ninth grade volunteered at the zoo.The head zookeeper told the volunteers during their shift they could have a tour.By going into the storage shed supplies can be found. Mike is working on solving the exponential equation 37^x = 12; however, he is not quite sure where to start. The ratio of my age 12 years ago to my age now is 2/3. How old will I be in 5 years? Acertain radioactive substance has a half-life of five days. Howlong will it take for an amount A to disintegrate until only onepercent of A remains? what is the perimeter of a rhombus whose diagonals measure 42cm and 56cm? Which label's best complete the floor chart can someone please help me with northern ireland history? the question is ; why did the nationlist's turn on the british army/goverment? Summarize the essay below.After colonialism though the scenario changed. Elmuti et al. write about numerous obstacles that remain in preventing women from obtaining high levels of leadership. Among the obstacles they highlight are organisational barriers, workplace relationships, globalisation, internal motivation and lifestyle conflicts. These obstacles are briefly clarified below. Organisational barriers: This refers to culture within organisations that prevent women from advancement. Selection process: Although there is usually a huge pool of qualified women they are not considered for leadership positions. Workplace relationship: Frequently women are unable to find suitable, capable female mentors. Globalisation: Often top executives have to relocate to new cities and countries. This can be a barrier to women with families. Internal motivation: Usually people argue that women lack self-confidence to move to higher levels within organisations. Lifestyle conflict: Women have various other roles they need to play outside the workplace. They are caretakers for their families and work roles may clash with domestic roles. Kanyoro also points out that womens leadership has been invisible over decades because it has been viewed through genderbiased lenses. Furthermore, Kanyoro16 argues that the challenge of society is to make women leadership visible as society magnifies women leaders role. This includes ensuring that women pioneers in leadership have space and voice to practice their leadership in positions that commensurate with their skills. Singh and Prasad mention sexual harassment and stereotypes as being among the foremost hindrances to women managers. New organisational culture and transformational leadership Ananda writes about a concept in leadership that she refers to as midwifing and she calls this a new paradigm. Midwifing underscores feminine leadership thereby bringing qualities such as transformation, nourishment and energy to all our organisations. Ananda adds by stating that midwifing is necessary in all organisations because feminine leaders support a spirit of cooperation not competition. In fact, much research currently supports feminine leadership qualities that are linked with compassionate leadership. Researchers have linked this leadership as transformational leadership, which they say fosters the followers organisational commitment. Furthermore, Verma and Krishnan20 contend that feminine style of leadership is characterised by sensitivity and cooperation. At a time when many South African schools have teachers who lack commitment, there is much need to grow leaders who are transformational in their approach. Leaders who want to be transformational or those who want to entrench a new organisational culture can utilise feminine qualities of leadership contained in transformational leadership. Schools, like all organisations need progress and achievement of learners; yet learners cannot achieve when teachers are not committed to their job. Verma and Krishnan21 argue: Transformational leaders motivate their followers to do more than they really expect they can do, increase the sense of importance and value of the tasks, stimulate them to surpass their own interests of the team, organisation on large community, and raise the level of change (Bass, 1985). Transformational leadership occurs when one or more persons engage with others in such a way that leaders and followers raise one another to higher levels of motivation and moralityTransformational leaders inspire and motivate followers in ways that go beyond exchanges and rewards. The above quote explicates a number of crucial values necessary for successful leadership. Arguably, women possess these qualities. Daniel points out that the instinctive tendency of women to nurture and take care of their families makes them dependable. Some people have also argued that the ability of women to multitask makes them better leaders than men. African women leaders have an immense capacity to positively influence the livelihoods of people. Maybe women are even better leaders compared to men due to their ability to multitask and deal with all the stresses of a family. These abilities enable women to be effective transformational leaders who will be able to achieve organisational success in a changing society. The theory that undergirds the rebirth of Africa will want to recognise the pre-colonial abilities that were accorded to women in society. Dodo underscores the need for an African Renaissance theory based on African values and norms. For an African revival, this theory would use gender opportunities for women to advance their standing in society. Leadership and management in Africa would not be complete without the input and role of women. In the African village even great leaders (men) were successful because women complemented and elevated them. Suppose f(x) = x2 + 1. Find the graph off(4x). What is the mass of ammonium chloride dissolved in 500ml of 0.875m??? Formal Communication follows the practices shaped by the organization through official policies, hierarchy, and technology systems naoh is a hygroscopic solid, which means that it can absorb water from its surroundings, therefore it is important to What is the missing coefficient of the x-term of the product (-x-5)2 after it has been simplified?(x 5)^2 = x^2 + _____x + 25a. -25 b. -10 c. 10d. 25 h(x) = 3x - 4 What is h(6)? O A. 5 O B. 22 O c. 6 O D. 14 How did Athenian democracy influence citizens rights in the present-day United States?Citizens rights are limited under the law.Citizens must serve in order to gain rights.The rights of citizens are protected under law.Rights are limited to a select group of citizens. Can someone please help Please can somebody help me, I literally have no idea what to do