Calculate the mass percentage composition of the elements in nitric acid `(H=1 ,N=14, O=16)`.

Calculate the mass percentage of different elements present in sodium sulphate (Na_2SO_4)

Work out the percentage composition of constituents elements in the following compounds: Lead phosphate [Pb_3(PO_4)_2]

Work out the percentage composition of constituents elements in the following compounds: Macrocosmic salt - Sodium ammonium hydrogen phosphate tetrahydrate (NaNh_4HPO_4*4H_2O) (At. ,ass : Pb = 207, P = 31, O = 16, K = 39, Cr =52, Na =23, N=14)

Work out the percentage composition of constituents elements in the following compounds: Potassium dichromate (K_2Cr_2O_7)

Calculate the molar mass of the following (i) H_2 O (ii) CO_2 (iii) CH_4

A compound on analysis gave the following percentage composition by mass: H = 9.09, O = 36.36, C = 54.55. Molecular mass of compound is 88. Find its molecular formula.

30xx10^(-4) kg of urea dissolved in water to make 500 mL aqueous solution and this solution is isotonic with cane - sugar solutions .How much mass of cane sugar in its one litre solutions ? (H=1,N=14,O=16,C=12)

Solve the examples Following are atomic masses of a few elements in Daltons and the molecular formulae of some compounds. Deduce the molecular masses of those compounds. Molecular formulae: MgO (Atomic masses: H=1, O=16, N=14, C=12, Na=23, Cl=35.5, K=39, Mg=24, Al=27, Ca=40, P=31, S=32)