Weight of 0.1 mole of `X_2Y is 4.4 gm and 0.05 mole of XY_2 is 2.3 gm. find the atomic weight 'x'.

The mass of 0.1 mol of X_(2)Y is 4.4g and the mass of 0.05 mol of XY_(2) is 2.3g. Find the atomic masses of X and Y.

Suppose the elements X and Y combine to form two compounds XY_(2) and X_(3)Y_(2) . When 0.1 mol of XY_(2) weights 10g and 0.05 mol of X_(3)Y_(2) weights 9g, the atomic weights of X and Y are-

X and Y are the two elements which form X_(2)Y_(3) and X_(3)Y_(4) . 0.2 mol of X_(2)Y_(3) weighs 32g and 0.4 mol of X_(3)Y_(4) weighs 92.8g. The atomic masses of X and Y respectively are-

The formula of an acid is HXO_2 The mass of 0.0242 moles of the acid is 1.657 g. What is the atomic weight of X ?

Dry air was passed successively through a solution of 5 gm of solute dissolved in 80.0 gm of water and through pure water. The loss in weight of the solution was 2.5 gm and that of the pure solvent was 0.04 gm. What is the molecular weight of the solute?

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 metal M forms the sulphate M_2(SO_4)_3 0.596 gm of the sample reacts with excess BaCl_2 to give, 1.22 gm BaSO_4 . What is the atomic weight of the M ? (S = 32, Ba + 137.3)

0.387 gm of a biopolymer when dissolved in 100 ml water at 27^@C shows an osmotic pressure of 4.2 atm find the molecular weight of the biopolymer.

Find the number of atoms of nitrogen in (1) 1 gram-mole of NO and (2) 0.5 gram-mole of NO_(2) . Which one will be heavier-1 gram-mole of NO or 0.5 gram-mole of NO_(2) ?