Which of these ionization processes requires the highest amount of
energy?
(a) na(g) --> na*(g) + e;
(b) mg(g) --> mg (g) + e;
(c) al(g) --> alt(g) + e;
(d) ca(g) --> ca*(g) + e;

Hibernation and migration are adaptations that animals use to sustain life during the winter months when demand outstrips supply. Hibernation occurs when animals rest or sleep for the entire winter. The movement of animals from one location to another is referred to as migration.

Hibernation is a tactic by which animals conserve energy to survive in adverse weather conditions or a lack of food.

It is characterized by physiological changes such as a decrease in body temperature and a slowing of metabolism.

The movement of animals from one location to another is referred to as migration.

Hibernation and migration are adaptations that animals use to sustain life the winter months when demand outstrips supply.

Thus, animal behaviors, such as hibernation or migration, enhance organisms' chances of survival.

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\(\\ \tt\hookrightarrow Density=\dfrac{Mass}{Volume}\)

\(\\ \tt\hookrightarrow Volume=\dfrac{Mass}{Density}\)

\(\\ \tt\hookrightarrow Volume\propto \dfrac{1}{Density}\)

Snow with density 0.25g/ml has more volume

The volume of snow with a density of  0.5 g/mL will have more water than the snow with a density of 0.25 g/mL.

Density is the mass per unit volume. Density can be calculated by knowing the mass and volume of the object. Volume is the space occupied by an object.

Let's take the volume to be 100

The densities are 0.5 g/mL and 0.25 g/mL

so, volume = mass / 0.5 g/ml

mass = 100 x 0.5 = 50

Second density =  0.25 g/mL

volume = mass / 0.25 g/ml

Mass = 100 x 0.25 = 25.

The mass is directly proportional to the density. So, if the mass has increased the density is also increased, so the volume of snow with a density of  0.5 g/mL will have more water than the snow with a density of 0.25 g/mL.

Thus, more water will be present in the amount of snow with a density of 0.5 g/mL than the snow with a density of 0.25 g/mL.

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Answer:

Gravity and inertia

Explanation:

each plant does have magnetism but they are two far away from each other to cause anything to happen. Electricity just dosent make sense.

Answer: Element can be chemically combined into compound, therefore, a compound consist of two or more elements combined, in definite proportions, by chemical means. Compounds may be formed by combining Adams of their constituent elements by ionic bonds or by covalent bonds.

Explanation:

1. It is very basic principle that two like charges repel and two unlike charges attracts. All electrons are negatively charged and thus two electrons will repel each other. Hence, the given option is correct.

An electric field is produced by the force from charged particles. The strength of field lines depends on the magnitude of charges and the presence of magnetic field is there.

2. The object which have higher velocity will have higher kinetic energy. The spring travelling downward will have an acceleration due to gravity downwards. Hence, it has higher kinetic energy.

3. When the electrons slow down by interacting with other particles its kinetic energy converts to potential energy.

4. Atoms bond to form molecules. Electric fields of particles with opposite charges are interacting together to form bonds.

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Answer:

This is correct!!

Explanation:

I got a 100, thank you!

Answer:

Skilled Scientist level from Rubric: The student clearly explained the purpose of the lab, showing critical thinking skills.

Procedure:

Investigate each of the three components of cell theory to investigate from the corkboard in the virtual lab:

All organisms are composed of cells.

Cells come from existing cells.

Cells are the basic unit of life.

For each section, record your observations below.

Complete your report and submit it for grading.Data and Observations (27 points):

Skilled Scientist level from Rubric: Data and/or observations were recorded accurately for each section; observations include important details, such as observable detail when appropriate.

Investigation #1 (9 points): All organisms are composed of cells.

What is the main function of each part of the compound microscope? Explain in your own words using information from the activity on page 7 of the lesson.

Part

FunctionEye piece

Ocular lens

Objective lenses

Slide

Cover slip

Stage

Focusing dials

Light

Condenser lens

Observe each specimen under the microscope, and record a description about its appearance.

HINT: What do you see with youreyes? Describe the colors, shapes and how the cells are spaced.

Specimen Type

Description

Plant cell

Animal cell

Bacteria cell

Investigation #2 (9 points): Cells come from existing cells.

Observe the two flasks, and record information about their appearance.

HINT: What do you see with your eyes? If nothing has changed write “no change”

Day

Flask with open (broken) neck

Flask with intact neck

1

24

5

Investigation #3 (9 points): Cells are the basic unit of life.

Observe the two petri dishes, and record information about their appearance.

Day

Petri dish (on left) containing agar plus nutrients

Petri dish (on right) containing agar without nutrients

1

2

3

4

5

Conclusion :

Use your data to answer the following questions in your own words. Use complete sentences, and be as detailed as possible.

Skilled Scientist level from Rubric: The student demonstrated excellent critical thinking and problem solving skills when answering the conclusion questions. Answers and ideas were expanded with unique details that were novel and showed creative thinking.

How did scientists discover that all living things are made of cells?

HINT: Review Investigation #1 for on this question.

How did Pasteur’s experiment with the flasks disprove the idea that living things could just appear or come from nonliving things like water and air?

HINT: Review Investigation #2 for on this question.

Why are nutrients needed for living things? Describe the difference between living and nonliving things.

HINT: Review Investigation #3 for on this question.

TO SUBMIT YOUR COMPLETED FILE FOR GRADING:

can you

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Answer:

There are three types of periods in the modern periodic table: very short periods, short periods, and long periods.

The difference between very short periods and short periods is the number of elements they contain. Very short periods only contain two elements, while short periods contain eight elements. The difference between short periods and long periods is the number of orbitals that can be occupied by electrons in each period. Short periods can only have electrons in the s- and p-orbitals, while long periods can also have electrons in the d-orbital.

Here is a table summarizing the differences between very short periods, short periods, and long periods:

Answer:

196J, but C. at 200 J comes close.

Explanation:

Potential energy due to gravity is given by:

PEgrav = mass • g • height

where g is the acceleration due to gravity.  We'll use 9.8 N/kg (on Earth).

PEgrav = mass • g • height

PEgrav = (2 kg) • (9.8 N/kg) • (10 m)

PEgrav = 196 N*m

1 N*m = 1 Joule

PEgrav = 196 J

C. at 200 J comes close.  The solution probably used a value of g equal to 10 N/kg)

Answer:

20 J

Explanation:

The 4-methyl pentane-2-ol (\(C_6H_{14}O\)) is an alcohol compound with a methyl group attached to the fourth carbon atom and a hydroxyl group attached to the second carbon atom in a five-carbon chain.

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Eighty Billion Years

\(HCLO_{2}\) is the strongest acid.

Based on the oxidation state of the central atom, the acidity is determined.

More acidic nature is present at higher oxidation states.

It is +3 in \(HCLO_{2}\)

It is +1 in HClO and +1 in HBrO

Chloric acid, hydrobromic acid, hydrochloric acid, hydroiodic acid, nitric acid, perchloric acid, and sulfuric acid are the seven major acids that make up strong acids.

These are referred to as strong acids since they can totally dissociate in water.

An acid that entirely ionizes in an aqueous solution is referred to as a strong acid.

When an acid is dissolved in water, it always loses a proton (A H+). In other words, a strong acid is highly effective in releasing protons and constantly on the move. An acid that partially ionizes in a solution is considered weak.

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Answer:

Most plants cannot use nitrogen directly from the atmosphere.

Explanation:

The  concentration of the unknown solution is 0.0293 M

Concentration is the component's abundance divided by the total volume of the mixture. There are several types of mathematical descriptions, such as mass concentration, molarity, number concentration, and volume concentration.

Balanced reaction equation

H3PO4 + 3NaOH ---- > Na3PO4 + 3H2O

Lets calculate the moles of NaOH added using the volume and molarity of the NaOH

Volume of NaOH = 26.38 mL = 0.02638 L

Moles = molarity x volume in liter

           =0.100 M * 0.02638 L

           =0.002638 mol NaOH

Now using the mole ratio of the NaOH and H3PO4 we can calculate the moles of H3PO4 as follows

Mole ratio is 3 mol NaOH = 1 mol H3PO

0.002638 mol NaOH * 1 mol H3PO4 / 3 mol NaOH = 0.0008793 mol H3PO4

Now using the moles and volume of H3PO4 we can calculate its molarity

Volume of H3PO4 used = 30.00 mL = 0.0300 L

Molarity = moles / volume in liter

                =0.0008793 mol /0.030 L

                = 0.0293 M

Therefore molarity of the H3PO4 is 0.0293 M

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The estimated equilibrium constant for the reaction Br2(g) + Cl2(g) ⇋ 2BrCl(g) at 610 K is 1.16.

To estimate the equilibrium constant, we can use the equation:

ΔG° = -RTln(K)

where ΔG° is the standard Gibbs free energy change, R is the gas constant, T is the temperature in Kelvin, and K is the equilibrium constant.

For the reaction 2NO2(g) ⇋ N2O4(g), the given ΔH°f for N2O4(g) is 9.16 kJ/mol. Using this value, we can calculate the standard Gibbs free energy change:

ΔG° = ΔH° - TΔS°

where ΔS° is the standard entropy change. We do not have this value, but we can assume it is roughly constant for this type of reaction. Thus, we can estimate ΔG° to be:

ΔG° ≈ ΔH° = 9.16 kJ/mol

At 610 K, we have:

ΔG° = -RTln(K)

-9100 J/mol = -(8.314 J/mol/K)(610 K)ln(K)

ln(K) ≈ 2.37

K ≈ e^2.37 = 10.7

Therefore, the estimated equilibrium constant for the reaction 2NO2(g) ⇋ N2O4(g) at 610 K is 10.7.

For the reaction Br2(g) + Cl2(g) ⇋ 2BrCl(g), we are given the ΔH°f for BrCl(g) as 14.6 kJ/mol and the ΔG°f for BrCl(g) as -1.0 kJ/mol. Using the same assumptions as before, we can estimate ΔG° to be:

ΔG° ≈ ΔH° = 14.6 kJ/mol

At 610 K, we have:

ΔG° = -RTln(K)

-1000 J/mol = -(8.314 J/mol/K)(610 K)ln(K)

ln(K) ≈ 0.15

K ≈ e^0.15 = 1.16

Therefore, the estimated equilibrium constant for the reaction Br2(g) + Cl2(g) ⇋ 2BrCl(g) at 610 K is 1.16.

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Answer:

64g of \(\bold{CH_{3}OH}\dashrightarrow\)44.8L

vapour density of \(CH_{3}3OH=\frac{mass}{volume}\) of \(\bold{CH_{3}OH}\)

=64/44.8=10/7=1.43 g/l

Vapour density of \(\bold{CH_{3}OH}\)=1.43g/l

64g of \(\bold{CH_{3}OH => 44.8L }\)

vapour density of \(\small{\sf{CH_{3}3OH=\frac{mass}{volume} of } \bold{CH_{3}OH}}\)

=64/44.8=10/7=1.43 g/l

Vapour density of \(\bold{CH_{3}OH = 1.43 g/L}\)

Answer: In CaF2, the oxidation number of Ca is +2

, and that of F is -1

. In H2SO4, the oxidation number of H is +1

, that of S is +6

, and that of O is -2

. In CaSO4, the oxidation number of Ca is +2

, that of S is +6

, and that of O is -2

. In HF, the oxidation number of H is +1

, and that of F is -1

Answer:

the first question is homeostasis. and the second question is the wolf panting

Explanation:

let me know if u need an explanation n ill try to give one :)

The chemical formula of mentioned substances is as follows 1) SO₃ 2) K\(^+\) and NO₃\(^-\) 3) ΔH 4) Cu 5) Hg (l) 6)ZnCl₂.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

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Answer:

HEAT OF COMBUSTION PER GRAM OF OCTANE IS 1723.08 J OR 1.72 KJ/G OF HEAT

HEAT OFF COMBUSTION PER MOLE OF OCTANE IS 196.4 KJ/ MOL OF HEAT

Explanation:

Mass of water = 100 g

Change in temperature = 28.78 °C - 21.36°C = 7.42 °C

Heat capcacity of water = 4.18 J/g°C

Mass of octane = 1.8 g

Molar mass of octane = C8H18 = (12 * 8 + 1 * 18) g/mol= 96 + 18 = 114 g/mol

First is to calculate the heat evolved when 100 g of water is used:

Heat = mass * specific heat capacity * change in temperature

Heat = 100 * 4.18 * 7.42

Heat = 3101.56 J

In other words, 3101.56 J of heat was evolved from the reaction of 1.8 g octane with water.

Heat of combustion of octane per gram:

1.8 g of octane produces 3101.56 J of heat

1 g of octane will produce ( 3101.56 * 1 / 1.8)

= 1723.08 J of heat

So, heat of combustion of octane per gram is 1723.08 J

Heat of combustion per mole:

1.8 g of octane produces 3101.56 J of heat

1 mole of octane will produce X J of heat

1 mole of octane = 114 g/ mol of octane

So we have:

1.8 g of octane = 3101.56 J

114 g of octane = (3101.56 * 114 / 1.8) J of heat

= 196 432.13 J

= 196. 4 kJ of heat

The heat of combustion of octane per mole is 196.4 kJ /mol.

Mass of water = 100 g

Change in temperature = 28.78 °C - 21.36°C = 7.42 °C

Heat capcacity of water = 4.18 J/g°C

Mass of octane = 1.8 g

Molar mass of octane = C8H18 = (12 * 8 + 1 * 18) g/mol= 96 + 18 = 114 g/mol

First is to calculate the heat evolved when 100 g of water is used:

Heat = mass * specific heat capacity * change in temperature

Heat = 100 * 4.18 * 7.42

Heat = 3101.56 J

Answer:

well all living things made up of objects

Explanation:

Hope this helps:)

All living things and objects best describe matter.

Matter is a substance which is made up of various types of particles  which occupy space and have inertia . All living things and objects  are made up of various types of particles  that occupy space and have inertia .

Depending on temperature and other factors matter is able to exist in different phases. Most common of which are solid, liquid and gas. Matter can exist in more than one state depending on the temperature  and pressure .

State of matter can be changed  by heating or cooling and even by changing the applied pressure.When a state changes matter does not break rather its state changes though its chemical composition remains same.

Physical characteristics of matter are shape, color, size and temperature. Every matter is made up of elements which  cannot be broken down further by ordinary chemical reactions.

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The reduction of alkyne to an alkene in the first step allows the best reagent to be chosen for each subsequent step.

Describe reagents.

A reagent is merely an essential component of a chemical reaction, it should be mentioned. It is an ingredient that speeds up the reaction.

With H2 and Lindlar's catalyst, an alkyne is reduced to alkene as the initial step in this process. Alkene will then be brominated to produce allyl bromide as the next step.

In this instance, the required allyl alcohol will be produced via the reaction of allyl bromide with NaOH.

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Answer:

Here, I hope this helps

Explanation:

Answer:

       ┃

        V

Explanation:

A polar molecule is a chemical species in which the distribution of electrons between the covalently bonded atoms is not even. Each atom has a certain electro-negativity. When bonded to another atom, the atom with the higher electro-negativity will tend to attract more electrons.

A redox reaction is a chemical reaction in which one or more of the reacting species undergoes oxidation and one or more undergoes reduction. An oxidizing agent is an element or compound that oxidizes another substance, while a reducing agent is an element or compound that reduces another substance.

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solido

Explanation:

porque estan todos los puntos juntos

Answer:

Q = 43,000 calories = 180,000 joules = 180 Kilojoules

Explanation:

Heat flow for phase change can be defined as Q = m·ΔHv  

ΔHv = Heat of Vaporization for water = 540 calories/gram = 2259 joules/gram = 2.259 Kilojoules/gram

m = mass of object of interest ( in this problem 80 grams steam 100°C converting to 80 grams of water at 100°C

Q = m·ΔHv = 80g x 540 cals/g =43.200 calories x 4.184 joules/cal = 180,748.8 joules (calculator answer) => 180,000 joules (2 sig. figs.) = 180 Kj

Evidence that a chemical reaction took place would be the formation of a new substance, a change in color, a release of gas, or a temperature change.

There are several possible pieces of evidence that a chemical reaction has taken place in this experiment:

Part B: In bottles 1 and 2, the amount of ammonia used is different, with bottle 1 having 1 tablespoon and bottle 2 having 1/3 cup.

The amount of product in bottle 2 is more than the amount of product in bottle 1.

Therefore, the amount of product is not proportional to the amount of ammonia used in these two bottles.

Part C: In bottles 2 and 3, the amount of reactants is different, with bottle 2 having 1/3 cup + 1 tablespoon of water and bottle 3 having only 1 tablespoon of water.

The amount of product in bottle 2 is more than the amount of product in bottle 3.

Therefore, the amount of product is not proportional to the amount of ammonia used in these two bottles.

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Answer:

If 1 mole of water = 18 g

× =0.250g

Hence cross Multiply to get.

0.250×1/18=0.01389 moles

The grams of the reactant that were consumed will be 2g

The Law of Conservation of Mass by Antoine Lavoisier states that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.

According to the law we understand that mass is neither created nor destroyed. So, if 2 grams of product are produced, then the mass of reactants consumed will also be equal to 2 grams.

Hence if 2 grams of product is produced by the chemical reaction, 2 grams of reactants are consumed.

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