Calculate the mass percent composition for each of the following compounds: (7.4)
a. 0.457 g of C and 0.043 g of H
b. 3.65 g of Na, 2.54 g of S, and 3.81 g of O
c. 0.907 g of Na, 1.40 g of Cl, and 1.89 g of O
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