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A sample of a oxide of iron weighing 2.40 gram's was heated in stream of...

A sample of a oxide of iron weighing 2.40 gram's was heated in stream of hydrogen until it was completely convected to the metal. If the matter weighed 1.68 gram's what is the formula of the oxide if iron is 56 and oxygen is 16?
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Asked by Duru on 20th February, 2022
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