Asked by tasha

What is the empirical formula of a compound that contains two moles of calcium, two moles of sulfur and eight moles of oxygen?
A. CaS0
B. CaS02
C. CaSO4
D. Ca2S0
i think D
Answered by DrBob222
No, D has the 2 mols Ca but only 1 or S and 1 of O. That's not what the problem says.
Answered by tasha
so would it be B
Answered by DrBob222
No, you're guessing. I see 2 mols S in the problem but not in the answer. C'mon. Write it down. It says the empirical formula is 2Ca, 2S and 8O. Write it down.
Ca2S2O8. Doesn't that look like a multiple of one of the answers. Remember EMPIRICAL formula means SIMPLEST so.........
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