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What is the mass percent composition of calcium in calcium oxide? THANK YOU?
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- Roger the MoleLv 75 years agoFavorite Answer
Molar mass of Ca is 40.0780 g/mol
Molar mass of CaO is 56.0774 g/mol
(40.0780 g/mol) / (56.0774 g/mol) = 0.71469 = 71.469% Ca by mass
- SheldonLv 55 years ago
calcium oxide= CaO
% Ca: molar mass Ca/molar mass CaO x 100
% O: molar mass O/molar mass CaO x 100
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