Calculate the mass per cent of different elements present in sodium sulphate Na2SO4
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Mass % of an element = molar mass of component ×100 / molar mass of compound
The molecular formula of compound (Na2SO4) is
= [(2 × 22.99) + (32.06) + 4 (16.00)]
= 142.04 g
Molar mass of Na2 = 2 × 22.99 = 45.98
Molar mass of O4 = 4 × 16.00 = 64.00
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