A bottle of $KMnO_4$ contains 66.38 g of the compound. How many moles of $KMnO_4$ does it contain?

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Answer 1 · 2015-11-18T19:27:33

$0.42$ g/mol

The number of moles in a compound is given by the formula:
moles $=(mass)/(mol. mass)$
Molar mass of $KMnO_4=158.034$
Given mass of $KMnO_4= 66.38g$

moles of $KMnO_4 =$ $66.38/158.034=0.42$ g/mol

A bottle of KMnO_4KMnO_4 contains 66.38 g of the compound. How many moles of KMnO_4KMnO_4 does it contain?