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11 October, 15:03

How many grams of sodium are in 0.820 moles of na2so4?

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  1. 11 October, 15:11
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    the molar mass of a compound is the sum of the products of the atomic masses by the number of atoms of the element.

    molar mass of Na ₂SO₄ is - 142 g/mol.

    1 mol of Na₂SO₄ has a mass of 142 g.

    In 1 mol of Na₂SO₄ the mass of Na is 23 g/mol x 2 = 46 g.

    Mass of Na in 1 mol of Na₂SO₄ is - 46 g

    mass of Na in 0.820 mol of Na₂SO₄ - 46 g / 1 mol x 0.820 mol = 37.72 g.

    mass of Na is 37.72 g
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