S C Kheterpal, S N Dhawan and, P N Kapil Solutions for Chapter: States of Matter: Gases and Liquids, Exercise 3: PROBLEMS FOR PRACTICE

$500 \mathrm{mL}$ of nitrogen at $27°\mathrm{C}$ are cooled to $-5°\mathrm{C}$ at the same pressure. Calculate the new volume.

$400 \mathrm{mL}$ of oxygen at $27°\mathrm{C}$ were cooled to $-15°\mathrm{C}$ without the change in pressure. Calculate the contraction in volume.

A volume of hydrogen measures one cubic decimetre at $20°\mathrm{C}$ and at a pressure of half an atmosphere. What will be its volume at $10°\mathrm{C}$ and at $700 \mathrm{mm}$ pressure?

$300$ litres of ammonia gas at $20°\mathrm{C}$ and $20$ atmosphere pressure are allowed to expand in a space of $600$ litres capacity and to a pressure of one atmosphere. Calculate the drop in temperature.

One litre flask containing vapours of methyl alcohol (Mol mass $32$) at a pressure of $1 \mathrm{atm}$ and a temperature $25°\mathrm{C}$ was evacuated till the final pressure was ${10}^{-3} \mathrm{mm}$. How many molecules of methyl alcohol were left in the flask?

$28.32$ litres of chlorine were liberated at normal conditions of temperature and pressure. Calculate the volume of the gas at $12°\mathrm{C}$ and $780 \mathrm{mm}$ pressure.

Temperature at the foot of a mountain is $30°\mathrm{C}$ and pressure is $760 \mathrm{mm}$ whereas at the top of the mountain these are $0°\mathrm{C}$ and $710 \mathrm{mm}$. Compare the densities of the air at the foot and at the top of the mountain.