Decide which of the following statements are true and which are false. True Fals

Question

Decide which of the following statements are true and which are false.

True False  Real gas molecules behave most ideally at low temperature and high pressure.

True False  Ideal gas molecules have small volumes and exert weak attractive forces on one another.

True False  At constant temperature, the heavier the gas molecules, the smaller the average velocity.

True False  In order for two separate 1.0 L samples of O2(g) and H2(g) to have the same average velocity, the O2(g) sample must be at a lower temperature than the H2(g) sample.

True False  At constant temperature, the heavier the gas molecules, the larger the average kinetic energy.

True False  As temperature decreases, the average kinetic energy of a sample of gas molecules decreases.

Explanation / Answer

Real gas molecules behave most ideally at low temperature and high pressure ---- True

Ideal gas molecules have small volumes and exert weak attractive forces on one another ----True

At constant temperature, the heavier the gas molecules, the smaller the average velocity ---- False

In order for two separate 1.0 L samples of O2(g) and H2(g) to have the same average velocity, the O2(g) sample must be at a lower temperature than the H2(g) sample ----- False

At constant temperature, the heavier the gas molecules, the larger the average kinetic energy ---- False

As temperature decreases, the average kinetic energy of a sample of gas molecules decreases----True

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