Empirical and Molecular Formulae

JEE Main Chemistry · Some Basic Concepts of Chemistry · 7 questions, latest first

• An oxide of iron contains 69.9 % iron, its empirical formula, is: (Given: Molar mass of Fe and O are 56 and 16 g mol^-1…20266 April, Shift 1 · Q51
• Quantitative analysis of an organic compound (X) shows following \% composition. C: 14.5 \% Cl: 64.46\% H: 1.8 \% (Empirical…202528 January, Shift 1 · Q74
• The elemental composition of a compound is 54.2\% C, 9.2\% H and 36.6\% O. If the molar mass of the compound is 132 g mol^-1, the…202524 January, Shift 2 · Q51
• The hydrocarbon (X) with molar mass 80 g mol^-1 and 90\% carbon has ____ degree of unsaturation.202524 January, Shift 2 · Q74
• An organic compound has 42.1 % carbon, 6.4 % hydrogen and remainder is oxygen. If its molecular weight is 342, then its molecular…20245 April, Shift 1 · Q73
• A metal chloride contains 55.0 % of chlorine by weight.100 mL vapours of the metal chloride at STP weigh 0.57 g. The molecular…202312 April, Shift 1 · Q61
• Number of hydrogen atoms per molecule of a hydrocarbon A having 85.8 % carbon is ____ (Given: Molar mass of A=84 g mol^-1 )202325 January, Shift 2 · Q59