Answer to Question #170880 in General Chemistry for robert

Question #170880

if an oxide of carbon is 20% by mass what is its empirical formula




1
Expert's answer
2021-03-12T05:57:01-0500

Let's assume that the compound has a mass of 100g.


Moles of Carbon ="\\frac{80g}{12g\/mol}=6.66mol"


Moles of Oxygen ="\\frac{20}{16g\/mol}=1.25mol"


"C:\\frac{6.66}{6.66}=1"


"O:\\frac{1.25} {6.66}=0"


Thus the imperial formula "=CO"


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