Calculate the relative molecular mass and vapour density of methyl alcohol [CH3OH] if 160 g. of the alcohol on vaporization has a volume of 112 litres at s.t.p. Open Answer »
Calculate the atomicity of a gas X [at. no. 35.5] whose vapour density is equal to it’s relative atomic mass. Open Answer »
Calculate the relative molecular mass [molecular weight] of 290 ml. of a gas ‘A’ at 17 °C and 1520 mm pressure which weighs 2.73 g at s.t.p. [1 litre of hydrogen at s.t.p. weighs 0.09 g.] Open Answer »
A gas cylinder holds 85 g of a gas ‘X’. The same cylinder when filled with hydrogen holds 8.5 g of hydrogen under the same conditions of temperature and pressure. Calculate the molecular weight of ‘X’. Open Answer »
500 ml. of a gas ‘X’ at s.t.p. weighs 0.50 g. Calculate the vapour density and molecular weight of the gas. [1 lit. of H2 at s.t.p. weighs 0.09 g]. Open Answer »
Calculate the weight of the substance if it’s molecular weight is 70 and in the gaseous form occupies 10 lits. at 27°C and 700 mm pressure. Open Answer »