Some Basic Concepts of Chemistry
Mole concept, stoichiometry, empirical and molecular formulae.
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Take a full mock →Q1 · Some Basic Concepts of Chemistry · EASY
How many atoms are present in 24 g of magnesium (atomic mass = 24)?
Q2 · Some Basic Concepts of Chemistry · MEDIUM
Mass of CO₂ produced by complete combustion of 12 g of carbon (C + O₂ → CO₂):
Q3 · Some Basic Concepts of Chemistry · MEDIUM
A compound contains 40% C, 6.67% H and 53.33% O by mass. Its empirical formula is:
Q4 · Some Basic Concepts of Chemistry · EASY
Molarity of a solution containing 0.5 mol of NaOH in 250 mL of solution is:
Q5 · Some Basic Concepts of Chemistry · MEDIUM
What volume of 0.2 M sulphuric acid (H₂SO₄) solution can be prepared from 98 g of pure H₂SO₄? (Molar mass of H₂SO₄ = 98 g/mol)