What percent of calcium carbonate is oxygen?
1 Answer
Jan 22, 2017
Oxygen makes up
Explanation:
To calculate percent composition by mass, you start by considering one mole of the given compound. The mass of one mole of calcium carbonate is 100.1 g
Of that mass,
40.1 g is due to the one mole of calcium atoms it contains.
12.0 g is due to the one mole of carbon in it, and
48.0 g is due to the three moles of oxygen atoms in one mole of
Now. to find percent composition, you take each element separately, and do this calculation:
So, for oxygen, this would be
