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OpenStudy (anonymous):
The molar mass of Calcium Nitrate is 100.09. How many atoms of nitrogen are in 3 grams of the compound?
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OpenStudy (aaronq):
find the percent by mass composition of Nitrogen in the compound. multiply that by 3 grams find moles of nitrogen: divide that by the molar mass of nitrogen find # of atoms: multiply # of moles by avogadros number
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