34.05 mL' of phosphorus vapour weighs '0.0625 g' at '546^degree C' and '0.1' bar pressure. What is the molar mass of phosphorus?

34.05 ml of phosphorus vapour weights. 0.0625 g at 546^@C and 1 bar pressure. What is the molar mass of phosphorus? (R = 0.083 atm//k//mol)

A '1.28 g' sample of a colourless liquid was vapourised in a '250 ml' flask at '121^circ C' and '786 mm Hg'. What is the molar mass of this substance?

2.9g of a gas 95^@C occupied the same volume as 0.184g of H_2 at 17^@C at the same pressure. What is the molar mass of the gas?

Aqueous solution of phosphoric acid with a density of 1 g mL^(-1) containing 0.05% by weight of phosphoric acid is used to impart taste to many soft drinks. What is the molarity of phosphoric acid used in soft drinks ?

It is found that in 11.2 litres of any gaseous compound of phosphorus at NTP, there is never less than 15.5 g of P. Also, this volume of the vapour of phosphorus itself at NTP weighs 62 g. What should be the atomic weight and molecular weight of phosphorus?

Density of a gas is found to be 5.46 g dm^-1 at 27^@C and 2 bar pressure. What will be density at STP?

The density of gas was found to be 2.92 g L^(-1) at 27° C and 2.0 atm . Calculate the molar mass of the gas.

A vessel of 120 mL capacity contains a certain amount of gas at 35°C and 1.2 Bar pressure. The gas is transferred to another vessel of volume 180 mL at 35° C. What would be its pressure?