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28 March, 15:57

How many ethyne molecules are contained in 84.3 grams of ethyne (C2H2) ?

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  1. 28 March, 19:19
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    (~26grams/mole) and Avogadros # (6.022x10^23) 84.3grams x 1mole/26grams x 6.022x10^23 molecules/mole = 1.95x10^24 molecules of C2H2
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