When the pressure of $1 \ mol$ of ammonia gas changes from $1 \ atm$ to $0.5 \ atm$ at constant temperature,the number of molecules will:

Fill in the blanks:
$(1)$ The forces of attraction and repulsion between molecules and atoms are called ....... .
$(2)$ The attractive intermolecular forces between molecules of a substance are also known as .............. .
$(3)$ London forces are also known by the name of ........... .
$(4)$ The mathematical form of Charles's Law is ........ .

The atmospheric pressure is the sum of the

Explain the effect of increasing the temperature of a liquid on the intermolecular forces operating between its particles. What will happen to the viscosity of a liquid if its temperature is increased?

Which of the following is not considered in the calculation of the rate of diffusion according to Graham's Law?

Show the relationship between different units of pressure.