On the basis of Boyle’s law, explain why mountaineers carry oxygen cylinders with them.

Give reasons: Gases do not settle at the bottom of the vessel.

Draw a volume vs temperature (^oC) graph and find out the temperature correspondingly to zero volume.

Find the number of moles of molecules present in 50 mL of an ideal gas exerting a pressure of 770mm at 25^oc (R = 0.0821 L atm mole^-1k^-1)

Ans: 2.06 x 10^-3 mol