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18 June, 17:56

What is the percent by weight of sodium in sodium sulfate (Na2SO4) ? (The molar mass of Na = 22.99, S = 32.07, and O = 16.00.) 16.18% 22.58% 32.37% 45.05% 51.17%

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  1. 18 June, 18:00
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    The total mass would be 142.05 g/mol. Since sodium is 22.99 g/mol and there are 2 sodium atoms, it would be 45.98 g/mol. Divide 45.98 by 142.05 and you get 32.37%
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