All categories

3 years ago

Which is a postulate of the kinetic-molecular theory?

Chemistry

2 answers:

marshall27 [118]3 years ago

8 0

Answer:

Gas particles have a small volume relative to the spaces between them.

Explanation:

Sever21 [200]3 years ago

5 0

A gas is composed of a large number of particles called molecules (whether monatomic or polyatomic) that are in constant random motion.

Because the distance between gas molecules is much greater than the size of the molecules, the volume of the molecules is negligible.

Intermolecular interactions, whether repulsive or attractive, are so weak that they are also negligible.

Gas molecules collide with one another and with the walls of the container, but these collisions are perfectly elastic; that is, they do not change the average kinetic energy of the molecules.

The average kinetic energy of the molecules of any gas depends on only the temperature, and at a given temperature, all gaseous molecules have exactly the same average kinetic energy.

You might be interested in

2. The Food and Drug Administration (FDA) mandates that all vinegar sold in the United States must have a minimum concentration

Scilla [17]

Answer:

The minimum molarity of acetic acid in vinegar according to given standards is 0.6660 mol/L.

Explanation:

4% acetic acid by mass means that 4 gram of acetic acid in 100 g solution.

Given that density of the vinegar is same is that of water = 1 g/mL

Mass of the vinegar solution = 100 g

Volume of the vinegar solution = V

$Density=\frac{Mass}{Volume}$

$1 g/mL=\frac{100 g}{V}$

V = 100 mL = 0.1 L

Moles of acetic acid = $\frac{4 g}{60.052 g/mol}=0.0666 mol$

$Molarity=\frac{\text{Moles of solute}}{\text{Volume of solution(L)}}$

$M=\frac{0.0666 mol}{0.1 L}=0.6660 mol/L$

The minimum molarity of acetic acid in vinegar according to given standards is 0.6660 mol/L.

4 0

4 years ago

You are out on a hike, and you notice that the line of telephone wires you have been following along a slope is crooked. Two of

Tom [10]

Answer:

Explanation:

5 0

3 years ago

Describe the buffer capacity of the acetic acid buffer solution in relation to the addition of both concentrated and dilute acid

AysviL [449]

Answer:

The answer is in the explanation

Explanation:

Acetic acid, CH₃COOH, is a weak acid that will produce a buffer when its conjugate base, CH₃COO⁻, acetate ion, is added to the solution.

<em>That is because a buffer is the mixture of a weak acid and its conjugate base or vice versa.</em>

When an acid (HX) is added to the solution, the acetate ion will react producing acetic acid, thus:

CH₃COO⁻ + HX → CH₃COOH + X⁻

For this reason, the pH doesn't change abruptly because H⁺ ions are not produced.

Now, if a base (BOH) is added to the buffer, CH₃COOH will react producing acetate ion and water, thus:

CH₃COOH + BOH → CH₃COO⁻ + H₂O + B⁺.

In the same way, there are not produced free OH⁻ and the pH doesn't change significantly.

5 0

3 years ago

PLEASE HELP ME ITS DUE IN 1 HOUR PLZZZ

Ierofanga [76]

I can’t use evidence from the picture but the green slime from the pond that they are talking about is called Algae, which is alive and can grow quickly with sunlight or any other source of energy such as water and carbon dioxide. Hope this helps!!

5 0

3 years ago

Read 2 more answers

a) A table tennis ball has been hit is about 13.16 times as fast as the speed for the swimming. What is the speed of the table t

Alex

x=swimming

The answer is X*13.16

7 0

3 years ago