13 misconceptual questions

Two ideal gases, A and B, are at the same temperature. If the molecular mass of the molecules in gas A is twice that of the molecules in gas B, the molecules' root-mean-square speed is

1.4 times greater in B

Which of the following is not true about an ideal gas?

All gas molecules have the same speed at a particular temperature

The linear expansion of a material depends on which of the following?

All of the following: The length of the material The change in temperature of the material The type if material

When using the ideal gas law, which of the following rules must be obeyed?

Always use temperature in kelvins and absolute pressure

One mole of an ideal gas in a sealed rigid container is into ally at a temperature of 100 degrees C. The temperature is then increased to 200 degrees C. The pressure in the gas

Increases by about 25%

When an ideal gas is warmed from 20 degrees C to 40 degrees C, the gas's temperature T that appears in the ideal gas law increases by a factor.

Of 1.07

Two identical bottles at the same temperature contain the same gas. If bottle B has twice the volume and contains half the number of miles of gas as bottle A, how does the pressure in B compare with the pressure in A?

PB=1/4 PA

Rod A has twice the diameter of rod B, but both are made of iron and have the same initial length. Both rods are now subjected to the same change in temperature (but remain solid). How would the change in the rods' lengths compare?

Rod A = Rod B

In a mixture of the gases oxygen and helium, which statement is valid?

The helium atoms will be moving faster than the oxygen molecules, on average.

A steel plate has a hole in it with a diameter of exactly 1.0cm when the plate is at a temperature of 20 degrees C. A steel ring has an inner diameter of exactly 1.0cm at 20 degrees C. Both the plate and the ring are heated to 100 degrees C. Which statement is true?

The hole in the plate and the opening in the ring get larger

The temperature of an ideal gas increases. Which of the following is true?

The pressure, the volume, or both, may increase

An ideal gas is in a sealed rigid container. The average kinetic energy of the gas molecules depends most on

The temperature of the gas

The rms speed of the molecules of an ideal gas

Will increase as the the temperature of the gas increases