MolSynapse / Question bank / Mole Concept

Mole Concept

220 questions in 6 topics. 44 NEET level, 88 JEE Main, 88 JEE Advanced. Every question was written for this chapter and solved independently a second time before publication.

Practice this chapter Chapter guide

Mole, molar mass, Avogadro number and molar volume 37

The number of molecules present in 3.6 g of water (H2O, M = 18 g mol^-1) is (use N_A = 6.02x10^23 mol^-1):
What is the mass of 0.25 mol of calcium carbonate, CaCO3? (Ca = 40, C = 12, O = 16)
The volume occupied at STP by 8.8 g of carbon dioxide is (C = 12, O = 16; molar volume at STP = 22.4 L mol^-1)...
The total number of atoms in 0.5 mol of ammonia, NH3, is (use N_A = 6.02x10^23 mol^-1):
Which of the following samples contains the largest number of atoms? (H = 1, C = 12, O = 16)
A gas has a density of 2.857 g L^-1 at STP (molar volume 22.4 L mol^-1). Which gas is it? (C = 12, N = 14, O =...
The mass of a single copper atom (Cu = 63.5) in grams is (use N_A = 6.02x10^23 mol^-1):
The total number of electrons in 1.8 g of water (H = 1, O = 16; use N_A = 6.02x10^23 mol^-1) is:
All 37 questions on this topic

Mole Concept

Mole, molar mass, Avogadro number and molar volume 37

Empirical and molecular formula, percentage composition 36

Stoichiometry of single and sequential reactions 37

Limiting reagent, percent yield and percent excess 36

Concentration terms (molarity, molality, mole fraction, ppm) and dilution 36

Average molar mass of mixtures, vapour density 38