10 gram acetylene at pressure 740MM of Hg pressure & `25^@C` temperature occupy volume (in L) is:

At 25^(@)C and 760 mm of Hg pressure a gas occupies 600 mL volume. What will be its pressure at a height where temperature is 10^(@)C and volume of the gas is 640 mL.

At 27^(@)C a gas under a pressure of 750 mm of Hg occupies a volume of 76 mL. Calculate the volume of gas at N.T.P.

At a constant volume, a quantity of an ideal gas has a pressure of 800 mm Hg at 300 K. At what pressure, the temperature will be halved ?

16 g of oxygen and 3g of hydrogen are mixed and kept at 760 mm of Hg pressure and 0^(@)C . The total volume occupied by the mixture will be nearly "_______________" .