Igcse Chemistry Past Paper May 2026

A) 28 g B) 32 g C) 44 g D) 48 g

From equation: 1 mol Mg → 1 mol H₂ So moles H₂ = 0.10 mol Volume H₂ = 0.10 × 24 = 2.4 dm³ (1 mark for mole ratio, 1 mark for volume) igcse chemistry past paper

[ \text{Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)} ] A) 28 g B) 32 g C) 44

Which statement about the mole is correct? O = 16)

How many moles are present in 36 g of water (H₂O)? (Ar: H = 1, O = 16)