A certain mixed oxide of iron contains 2.5 g of oxygen for every 7 g o – InterviewSolution

1.	A certain mixed oxide of iron contains 2.5 g of oxygen for every 7 g of iron. If it is regarded as a mixture of FeO and Fe2O3 in the weight ratio a:b, what is a:b? (atomic weight of iron = 56)
Answer» A certain mixed oxide of iron contains $2.5 g$ of oxygen for every $7 g$ of iron. If it is regarded as a mixture of $F e O$ and $F e_{2} O_{3}$ in the weight ratio $a : b$ , what is $a : b$ ? (atomic weight of iron = 56)

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