Question

Which of these best describes how the kinetic energy of carbon dioxide molecules change as the carbon dioxide is heated?

Answer 1

Answer: The correct answer is Option B.

Explanation:

Kinetic energy is defined as the energy which is possessed by the motion of a particle. The formula for the kinetic energy follows:

$K.E.=\frac{3}{2}\frac{R}{N_A}T$

where, R = Gas Constant

$N_A=\text{Avogadro's Number}$

T = Temperature

From above expression, kinetic energy is directly proportional to temperature of the system

$\text{Kinetic energy}\propto \text{Temperature}$

As the temperature is increases, the kinetic energy of the particles also increases and vice-versa.

In the given question,

The gas (carbon-dioxide) is heated which means the temperature of the gas is increases and hence, the kinetic energy will also be increased.

Hence, the correct answer is Option B.

Answer 2

B.
carbon dioxide molecules have more energy; therefore, the kinetic energy increases