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

3. All three phases can exist in equilibrium with one another at the _____ of a substance. triple point melting point critical p

natulia [17]

Answer: triple point.

At the melting point can exist two phases in equilbrium (liquid and solid).

At the boiling point can exist two phases in equilibrium (liquid and gas).

The critical point is the limit at wich gas and liquid can coexist.

And, indeed, at the triple point can solid, liquid and gas can coexist.

7 0

4 years ago

Read 2 more answers

A airliner has an internal pressure of 1.00 ATM and temperatures of 25°C at take off if the temperature of the airlines routes t

Georgia [21]

Answer:

Explanation:

Using Gay lussac's law equation as follows;

P1/T1 = P2/T2

7 0

3 years ago

"How many formula units are there in sample of copper(II) sulfate that has

babymother [125]

Answer: $1.23\times 10^{23}$ formula units

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{32.5g}{160g/mol}=0.203moles$

1 mole of $CuSO_4$ contains $6.023\times 10^{23}$ of formula units

Thus 0.203 mole of $CuSO_4$ contains = $\frac{6.023\times 10^{23}}{1}\times 0.203=1.23\times 10^{23}$ of formula units

8 0

3 years ago

Which two of the following groups are very reactive?

Snezhnost [94]

Answer:

A & B

Explanation:

Noble Gases are the least reactive as they have a full valence shell (and are stable)

3 0

3 years ago

Identify the systems that move your body, and explain how these ystems work together

Alenkasestr [34]

The respiratory system brings oxygen into the lungs when you breathe. The digestive system breaks food down into nutrients such as glucose. Now the circulatory system enters the picture. It transports glucose and other nutrients from the digestive system to the cells.
Integumentary System. (The skin, hair, and nails form the body's outer covering, or integument.)
Muscular System
Skeletal System
Circulatory System
Nervous System
Respiratory System
Hope this helps!:)

8 0

3 years ago