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1 September, 05:46

73.5 grams C, 4.20 grams H, and 72.3 grams Cl. What is the percent composition of each element in this compound?

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  1. 1 September, 07:34
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    To find percent composition do "parts over the whole" - - - > each individual mass over the total mass times 100 (since it is a percentage).

    total mass ("the whole") = 73.5 + 42.0 + 72.3 grams = 150 grams

    1. Carbon % = 73.5 grams / 150 grams x 100 = 49.0%

    2. Hydrogen % = 4.20 grams / 150 grams x 100 = 2.80%

    3. Chlorine % = 72.3 grams / 150 grams x 100 = 48.2%
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