Which statement correctly compares electric charge with electric current?
A.
They both require a human to make them.
B. Neither require charged particles.
C. They both require a battery and a bulb
D. They both require a movement of charged particles.

1. 12.992 L

2. 2.42 moles

3. 275.52 L

4. 567.844 g

Given

moles and volume at STP

Required

mass, volume and moles

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

1. 0.58 moles ammonia :

Volume = 0.58 moles x 22.4 L = 12.992 L

2. 77.5 grams of O₂ :

Moles = 77.5 grams x (1 mol/32 grams) = 2.42

3. 12.3 mole of Bromine gas :

Volume = 12.3 mole   x (22.4 L/1 mole) = 275.52 L

4. 4.8 moles iron(II)chloride :

Mass = 4.48 moles x molar mass ( 126,751 g/mol) = 567.844 g

Answer:

The electronic configuration of iron is: Ar3d64s2. the two electrons in the 4s orbital are paired, and two of the electrons in the 3d orbitals are paired leaving four unpaired electrons. In general when you are populating the p, d, f, etc

Explanation:

hope dis help

0 degrees Celsius or one atmosphere are considered the norms for both temperature and pressure.A molar gas volume in STP is 22.4 liters / mole, according to what is reported.

We find that temperature and pressure are linearly related, and if the temperature is on the kelvin scale, then P and T are directly proportional (again, when volume and moles of gas are held constant).

As the temperature increases, the average kinetic energy increases as does the velocity of the gas particles hitting the walls of the container. The force exerted by the particles per unit of area on the container is the pressure, so as the temperature increases the pressure must also increase.

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2 moles of HCl solution reacts with one mole Calcium Hydroxide

Ca

(

O

H

)

2

One mole of HCl has mass : 36.5 g/mol, two moles of HCl will have mass, 73 g.

One mole of Ca

(

O

H

)

2

has mass 74.1 g

as per equation; 73 g of HCl reacts with 74.1 g of Ca

(

O

H

)

2

1g of HCl reacts with 74.1g / 73 of Ca

(

O

H

)

2

1g of HCl reacts with 1.015 g of Ca

(

O

H

)

2

The addition of NaOH will shift the equilibrium to the left, while the addition of HCl will shift the equilibrium to the right. The direction of the shift depends on the reactants added and their reaction with the components of the equilibrium.

If NaOH is added to the solution, it will react with HNO2 to form the conjugate base NO2^- and water. This will increase the concentration of NO2^- and decrease the concentration of HNO2, causing the equilibrium to shift towards the left to restore equilibrium.

As a result, there will be a decrease in the concentration of H3O+ ions and an increase in the concentration of NO2^- ions.

On the other hand, if HCl is added to the solution, it will react with the conjugate base NO2^- to form HNO2 and chloride ions. This will increase the concentration of HNO2 and decrease the concentration of NO2^-, causing the equilibrium to shift towards the right to restore equilibrium.

As a result, there will be an increase in the concentration of H3O+ ions and a decrease in the concentration of NO2^- ions.

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The root-mean-square speed of the molecules will be the highest in SF6 at 200°C. According to the kinetic-molecular theory, the root-mean-square speed of gas molecules is directly proportional to the square root of their absolute temperature and inversely proportional to the square root of their molar mass.

The formula for calculating the root-mean-square speed is:

vrms = √(3RT/M)

where:

vrms = root-mean-square speed

R = ideal gas constant

T = absolute temperature

M = molar mass of the gas

At a given temperature, gases with lower molar masses will have higher root-mean-square speeds. In this case, we are comparing gases at 200°C. Among the given options (O2, H2O, and SF6), SF6 has the highest molar mass. Therefore, according to the kinetic-molecular theory, the root-mean-square speed of SF6 molecules will be the highest at 200°C.

The root-mean-square speed of molecules is not the same for all gases at a given temperature. It depends on the molar mass of the gas. In this case, SF6 has the highest molar mass among the given options, so its molecules will have the highest root-mean-square speed at 200°C.

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Answer:

= - 303.975 Joules

Explanation:

Given that:

The volume of the cylinder = 0.003 m^3

Now, to liters:

The volume = 0.003 *1000 L

= 3 L

For an open cylinder, we mean the atmospheric pressure is at standard condition.

Thus, the workdone = -PΔV

= - 1 atm (3 L)

= - 3 L atm

1 L atm to Joules

= 101.325 Joules

Therefore;

=- 3* 101.325 Joules

= - 303.975 Joules

Answer:

The mass of chlorine to react completely with 5.0  moles of aluminum is 531.75 grams.

Explanation:

Aluminum reacts with chlorine gas to form aluminum chloride through the following reaction, which is balanced (In a chemical equation, the number of atoms of each element in the reactants must be equal to the number of atoms of each element in the products In order to comply with the Law of Conservation of Mass, that is, in a chemical reaction the mass remains constant, that is, the mass that is consumed from the reactants is the same as that obtained from the products of the reaction):

2 Al + 3 Cl₂ ⇒ 2 AlCl₃

The rule of three is a way of solving problems of proportionality between three known values ​​and one unknown, establishing a proportionality relationship between all of them. A proportionality is direct when one magnitude increases the other also does it, and if the magnitude decreases the other in the same way. In this case, the rule of three, knowing a, b and c and with x being the unknown, is applied as follows:

a ⇒ b

c ⇒ x

So \(x=\frac{c*b}{a}\)

In this case the rule of three can be applied as follows: if by stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction) 2 moles of aluminum react with 3 moles of chlorine, 5 moles of aluminum with how many moles of chlorine do they react?

\(moles of chlorine=\frac{5 moles of aluminum*3 moles of chlorine}{2 moles of aluminum }\)

moles of chlorine= 7.5

Since the molar mass of the gas Cl2 is 70.9 grams/mole, you can apply the following rule of three: if 1 mole has 70.9 grams, 7.5 moles, how much mass does it have?

\(mass of chlorine=\frac{70.9 grams*7.5 moles}{1 mole}\)

mass of chlorine= 531.75 grams

The mass of chlorine to react completely with 5.0  moles of aluminum is 531.75 grams.

The question is: WHAT DATA OF THE ELECTRONIC CONFIGURATION ALLOWS YOU TO LOCATE THE CHEMICAL ELEMENTS IN THE PERIODIC TABLE?

Explanation:

Elements which have same number of valence electrons tend to show similar chemical properties due to which they are placed in the same group.

Hence, electronic configuration of an element tells us the number of valence electrons present in an element. As a result, it becomes easy to locate the element in its respective group.

Answer:

B. 6.86 g.

Explanation:

To solve this problem, we need to use stoichiometry. The balanced chemical equation tells us that 1 mole of KClO3 decomposes to form 1 mole of O2. We can use the molar mass of KClO3 to convert the given mass of KClO3 to moles, and then use the mole ratio from the balanced equation to find the moles of O2 produced. Finally, we can use the molar mass of O2 to convert moles of O2 to grams.

The molar mass of KClO3 is calculated as follows:

K = 1(39.10 g/mol) = 39.10 g/mol

Cl = 1(35.45 g/mol) = 35.45 g/mol

O = 3(16.00 g/mol) = 48.00 g/mol

Molar mass of KClO3 = 39.10 + 35.45 + 48.00 = 122.55 g/mol

Now we can use the given mass of KClO3 to find the moles of KClO3:

moles of KClO3 = 26.4 g / 122.55 g/mol = 0.215 mol

From the balanced chemical equation, we know that 1 mole of KClO3 produces 1 mole of O2. Therefore, the number of moles of O2 produced is also 0.215 mol.

Finally, we can convert the moles of O2 to grams using the molar mass of O2:

mass of O2 = 0.215 mol x 32.00 g/mol = 6.86 g

Therefore, the answer is B. 6.86 g.

The standard molar entropy is a measure of the disorder or randomness of a substance at standard conditions. Generally, solids have lower entropy than liquids, and liquids have lower entropy than gases.Option e is correct.

NaCl(s) Na3PO4(aq) NaCl(aq)

a.NaCl(aq) > Na3PO4(aq) > NaCl(s)

b. NaCl(aq) > NaCl(s) > Na3PO4(aq)

c. Na3PO4(aq) > NaCl(aq) > NaCl(s)

d. NaCl(s) > NaCl(aq) > Na3PO4(aq)

e. NaCl(s) > Na3PO4(aq) > NaCl(aq)

Based on the principles mentioned above, option e is correct. NaCl(s) has the lowest entropy because it is a solid, while Na3PO4(aq) has a higher entropy because it is in aqueous solution, and NaCl(aq) has the highest entropy since it is a more disordered state than both solid NaCl and Na3PO4(aq).

So, the correct order is NaCl(s) > Na3PO4(aq) > NaCl(aq).

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Answer:

               Molecular Formula = C₄O₂H₈

Explanation:

Molecular formula is calculated from following formula.

Molecular Formula = n(Empirical formula)

The formula for n is given as,

n = Molecular Formula Mass / Empirical Formula Mass

Molecular Formula mass = 88 g/mol

Empirical formula mass = 44

Putting values,

n = 88 / 44 = 2

Now,

Molecular Formula = 2(C₂OH₄)

Molecular Formula = C₄O₂H₈

The total heat energy required is expressed according to the formula:

where:

Qvap is the heat energy absorbed by the vapor

Qw is the heat energy absorbed by the water

Get the heat energy absorbed by the vapor at 100 degrees

Given the following parameters;

Mass of water = 100g

Molar mass of water (H2O) = 18.015g/mol

Hvap,w = 2259 J/g = 40.8 kJ/mol

Substitute the given parameters into the formula to have:

Get the heat absorbed by the water from 30 to 100 degrees and from 100 to 110 degrees using the formula below. Note that the water vapor is being heated without any phase changes, so we will be utilizing the specific heat capacity of water vapor.

Get the total heat energy required;

Here are the answers to the questions related to H2O:

(a) Using the ΔG°f values given for H2O(l) and H2O(g) at 298K:

ΔG°(H2O(l) ⇄ H2O(g)) = ΔG°f(H2O(g)) - ΔG°f(H2O(l))

= -228.4 - (-237.2) kJ/mol

= +8.8 kJ/mol

(b) The ΔG° value for the process H2O(l) ⇄ H2O(g) is +8.8 kJ/mol, which is positive.

Therefore, the process is not thermodynamically favorable at 298K.

A negative ΔG° indicates a thermodynamically favorable process while a positive ΔG° means the process proceeds in the opposite direction.

The positive ΔG° value shows that at 298K, the equilibrium lies on the left side favoring the liquid state.

In summary, the melting of H2O is not spontaneous at 298K due to the positive ΔG° value.

Let me know if you need any clarification or have additional questions!

Answer:8

842.46 or to the next whole number

Explanation:

just multiply the mass of iron with the volume mL you have.

The mass of the iron whose volume and density are 111 ml and 7.847 g/cm³ respectively is 871.01 grams.

The product of density and volume of a substance represents its mass. Mathematically -

M = V x ρ

where -

ρ - density

M - mass

V - volume

Given is iron in liquid form. It occupies a total volume of 111 ml.

The mass of liquid iron can be calculated using -

M = V x ρ

Volume of iron [V] = 111 ml = 111 cm³.

Density of iron [ρ] = 7.847 g/cm³

Therefore, we can write -

M = 7.847 x 111

M = 871.01 grams

Therefore, the mass of the iron whose volume and density are 111 ml and 7.847 g/cm³ respectively is 871.01 grams.

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Answer:

Sodium hydroxide is deliquescent (absorbs moisture from the atmosphere) solid. It cannot be weighed accurately. Therefore, it is not possible to prepare a standard solution of sodium hydroxide of accurately known concentration by weighing NaOH.

Answer:

Explanation:

All the stars we see in the night sky are in our own Milky Way Galaxy. Our galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a really dark area.

Answer: it is

Explanation: A galaxy is a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction, plus there are 100 billion planet in it.

Answer:

3.01 * 10 ^ 23 atoms of Pt

Explanation:

1 mole of Pt contains 6.02 * 10 ^ 23 atoms of Pt

195.084 g of Pt has  6.02 * 10 ^ 23 atoms of Pt  

97.6 g = .5 moles so  

97.6 g of Pt has 3.01 * 10 ^ 23 atoms of Pt

The 97.6 grams of platinum contains \(3.011\times 10^{23}\) atoms.

Given:

The mass of platinum = 97.6 grams

To find:

The number of platinum atoms in 97.6 grams.

Solution:

Mass of platinum = 97.6 g

Moles of platinum =\(\frac{97.6g}{195.084 g/mol}=0.500 mol\)

According to the mole concept:

1 mole = Avogadro Number = \(N_A=\) \(6.022\times 10^{23} atoms/ molecules/ions\)

The number of platinum atoms in 0.500 moles of platinum:

\(=0.500\times 6.022\times 10^{23} atoms\\\\=3.011\times 10^{23} atoms\)

The 97.6 grams of platinum contains \(3.011\times 10^{23}\) atoms.

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Answer:

Mass = 234 g

Explanation:

Given data:

Mass of NaCl produced = ?

Moles of chlorine = 2.0 mol

Solution:

Chemical equation:

2Na + Cl₂    →     2NaCl

now we will compare the moles of NaCl with chlorine gas.

           Cl₂           :          NaCl

             1            :           2

            2.0         :         2/1×2.0 = 4.0 mol

Mass of NaCl;

Mass = number of moles × molar mass

Mass = 4.0 mol × 58.5 g/mol

Mass = 234 g

Answer:

convection (I am pretty sure, I am sorry if it isnt right)

Explanation:

A complex polymer built of amino acids is called a : protein. They are macromolecules made up of long chains of amino acids that are connected by peptide bonds.

These amino acids are linked together in a specific sequence dictated by the genetic information encoded in the DNA. The sequence of amino acids determines the unique structure and function of the protein.

Proteins have a wide range of functions in biological systems. They serve as enzymes, antibodies, structural components, transporters, signaling molecules, and regulators of various cellular processes. Proteins are essential for the growth, development, and maintenance of cells, tissues, and organs in living organisms.

The diversity of proteins arises from the different combinations and arrangements of the 20 different amino acids that can be found in living organisms. The specific folding and three-dimensional structure of a protein are critical for its proper functioning.

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Answer:

A. Na+ OH-

Explanation:

positive and negative ions form bonds because positive and negative attract

Answer:

cyclohexene I think that's the answer

The idea of the atomic nature of matter was first developed by John Dalton.

He introduced the atomic theory, which proposed that matter was made up of tiny, indivisible particles called atoms. This theory was based on his observations and experiments on the behavior of gases

.Dalton's atomic theory had several postulates that helped explain the properties of matter. These postulates were:

All matter is made up of atoms, which are tiny, indivisible particles

.Each element is composed of atoms that are identical in size, shape, and chemical properties.

Atoms of different elements have different sizes, shapes, and chemical properties.

Atoms combine in fixed ratios to form compounds, and the ratios of their masses are related by whole numbers.

Atoms are indestructible and cannot be created or destroyed in chemical reactions

.However, Dalton's atomic theory was later modified and expanded upon by other scientists, including J.J. Thomson, Ernest Rutherford, and Niels Bohr, as new discoveries about the structure and behavior of atoms were made.

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Answer:

B and C

Explanation:

is it multiple choice question??

Van der Waals forces are the interaction between the molecules and the atoms. It increases with an increase in the molecular size and the number of electrons. Thus, options B and C are correct.

Van der Waals forces are the weak forces of attraction and repulsion present between the atoms and the molecules of the compounds. They are also called London Dispersion Forces and dipole-dipole forces.

An increase in the number of electrons and size of the molecule increases the surface area and the electron cloud which in turn, increases the Van der Waals force.

The intermolecular force increases as in large atoms or molecules the valence are held loosely as they are far from the nucleus or the center of the atom.

Therefore, the size and the electron increase the Van der Waals force.

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Answer:

two smaller, more stable nuclei

Explanation:

A. two smaller, more stable nuclei

Nuclear fission is the process in which a heavy nucleus is split into two large fragments of comparable mass to form more stable and smaller nuclei. This results in the release of great amounts of energy. Large nuclei are usually less stable, since it takes more energy to hold its structure together, the larger they are.

Here's a photo of Edge just incase.

Answer: Fertilization defintion

Explanation:

the action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote.

Or giving rise to new indivisual organisms or offspring and initiating development

Answer: the answer is D which is “Both processes involve the folding of the cell membrane”

There is really no difference thermal energy and heat are pretty the same thing.

Answer:

Thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat is the flow of thermal energy.