How many moles of oxygen atoms are contained in the following?

Question

(a) 3.13 mol KMnO4
(b) 54.0 mol CO2
(c) 2.21 10-2 mol CuSO4·5 H2O

Answer 1

Best Answer - Chosen by Voters

(a)
( 3.13 mol KMnO4 ) x ( 4 mol O / 1 mol KMnO4) = 12.52 mol O atoms

(b)
(54.0 mol CO2) x (2 mol O / 1 mol CO2) = 108.0 mol O atoms

(c)
(2.21 10^-2 mol CuSO4·5 H2O) x ((4 + 5) mol O / 1 mol CuSO4·5 H2O) =
0.199 mol O atoms