Analysis of a compound of phosphorous shows that 1.0 litre of it at STP never contains less than 1.384 g of the' element,Again 1.0 litre phosphorous vapour at STP weighs 5.536 g. Calculate approximate atomic mass, molecular mass and atomicity.

Mass of 1 litre of hydrogen at STP is 0.0896 g. Calculate the value of R from this date.

At a temperature of 273K and 1 atm pressure 1L of a gas weighs 2.054g. Calculate its molecular mass.

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

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

The chloride of a metal (M) contain 65.5% of chlorine 100 ml of the vapour of the chloride of metal at STP, weighs 0.72 g. The molecular formula of the metal chloride is

XY_2 and X_2Y_3 are two compounds of the elements X and Y 0.15 mole of each of these compounds weigh 9.3 and 15.9 g respectively. Calculate the atomic masses of X and Y.

A chloride of an element contain 49.5% chlorine. The specific heat of the element is 0.064. Calculated the equivalent mass, valency and atomic mass of the element.

The mean life of a radioactive element is 13 days. Initially a sample contains 1 g of this element . The mass of the element will be 0.5 g after a time of

Analysis of 30g of a compound D was found to contain 10g off element A and 20g of element B. again analysis of 45g of another compound E was found to contain 15g of element B and 30g of element C. caculate the amounts of D and E formed if 15g of A, 60g of B and 15g of C are mixed together and allowed to react with each other. also calculate total mass of the mixture after completion of the reaction. assume that no other reaction is possible except the reaction of B with A and C separately. state which laws of the chemical combination can be utilised in the calculation.

An element with density 11.2"g cm"^(-3) forms a fcc lattice with edge length of 4xx10^(-8) cm. Calculate the atomic mass of the element.