0.583 g of acetone, when vapourised, formed 225 cm3 of vapours at S.T.P. Calculate the gram molecular mass of the gas. [22.4 L of any gas at S.T.P. = 1 g.mol. mass of gas]
(a) The mass of 5.6 litres fo a certain gas at STP is 12 g. What is the relative molecular mass or molar mass of the gas? (b) Calculate the volume occupied at S.T.P. by 2 moles of SO2
200 c.c. of a gas measured at S.T.P. has a mass of 0.268g. Molecular weight of the gas is: