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2 June, 00:30

A sample of gold (Au) has a mass of 35.12 g. what is the moles of each element for AU?

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  1. 2 June, 01:48
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    To determine the number of moles (n) of a substance, divide its amount given in grams by the molar mass. The element in the problem is gold (Au) which has a molar mass of 196.97 grams per mole. The division is better illustrated below

    n = 35.12 g / 196.97 grams per mole

    The answer to the operation above is 0.1783 moles. Therefore, there are approximately 0.1783 moles of Au in 35.12 grams.
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