How many moles of oxygen atoms are contained in the following?
(a) 2.41 mol KMnO4
(b) 46.8 mol CO2
(c) 1.10 10-2 mol CuSO4·5 H2O

Question

How many moles of oxygen atoms are contained in the following?
(a) 2.41 mol KMnO4 
(b) 46.8 mol CO2 
(c) 1.10 10-2 mol CuSO4·5 H2O

anonymous · Answer

(a) There are four moles of oxygen atoms per molecule of KMnO4, so there are $$2.41\times4=9.64 $$ moles of oxygen atoms in 2.41 mol of KMnO4

(b) There are two moles of oxygen atoms per molecule of CO2, so there are $$46.8\times2=93.6 $$ moles of oxygen atoms in 46.8 mol of CO2

(c) This questions is written in a confusing manner, but I hope the examples I gave for the first two questions help you understand this problem.