Kinetic Theory Of Gas

If a gas expands at a constant temperature, it indicates that:

1. Kinetic energy of the molecules decreases

2. The pressure of the gas increases

3. The kinetic energy of the molecules remains the same

4. The number of molecules of gas increases

The energy absorbed by each molecule (A₂) of a substance is 4.4 x 10^-19 J and bond energy per molecule is 4.0 x 10^-19 J. The kinetic energy of the molecule per atom will be:

1. $2.0\backslash times{10}^{-20}$ $J$

2. $2.2\backslash times{10}^{-19}$ $J$

3. $2.0\backslash times{10}^{-19}$ $J$

4. $4.0\backslash times{10}^{-20}$ $J$

A gas such as carbon monoxide would be most likely to obey the ideal gas law at?
1. High temperature and low pressure
2. Low temperature and high pressure
3. High temperature and high pressure
4. Low temperature and low pressure