Advertisements
Advertisements
प्रश्न
Calculate the percentage composition of calcium nitrate.
[Ca = 40 N = 14, O = 16]
Advertisements
उत्तर
Calcium nitrate Ca[NO3]
Molecular mass of Ca[NO3]2 = Ca + 2[N2 + 3(O)]
= 40 + 2[14 + 3 × 16]
= 40 + 2[14 + 48]
= 40 + 124
= 164
% of Ca = `40/164 xx 100 = 24.9`
% of N = `28/164 xx 100 = 17.07`
% of O = `96/164 xx 100 = 58.54`
APPEARS IN
संबंधित प्रश्न
Calculate the percentage composition of each element in Potassium chlorate KCIO3.
Give three kinds of information conveyed by the formula H2O.
An acid of phosphorus has the following percentage composition; Phosphorus = 38.27%; hydrogen = 2.47%; oxygen = 59.26%. Find the empirical formula of the acid and its molecular formula, given that its relative molecular mass is 162.
Find the percentage of oxygen in magnesium nitrate crystals [Mg(NO3).6H2O].
Find the percentage of phosphorus in the fertilizer superphosphate Ca(H2PO4)2.
10 g of a mixture of sodium chloride and anhydrous sodium sulphate is dissolved in water. An excess of barium chloride solution is added and 6.99 g of barium sulphate is precipitated according to the equation given below:
\[\ce{Na2SO4 + BaCl2 -> BaSO4 + 2NaCl}\]
Calculate the percentage of sodium sulphate in the original mixture.
Calculate the percentage composition of calcium chloride.
[Ca = 40, Cl = 35.5]
Empirical formula of Ethyne.
Find the total percentage of Magnesium in magnesium nitrate crystals, Mg(NO3)2.6H2O.
[Mg = 24, N = 14, O = 16 and H = 1]
A compound X contains 32% of A, 20% of B and remaining percentage of C. Then, the empirical formula of X is ______.
(Given atomic masses of A = 64; B = 40; C = 32
