How many moles are present in 49 g of sulphuric acid, H₂SO₄ (H = 1, S = 32, O = 16)?
Correct answer A. 0.50 mol
Explanation
The molar mass of H₂SO₄ is 2 + 32 + 64 = 98 g mol⁻¹, so the number of moles is 49 ÷ 98 = 0.50 mol.
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