Chemistry, 09.03.2021 22:00 lilblackbird4

In the unbalanced equation shown below, how much iron was present before the reaction if there was 20 g of oxygen and 67 g of iron oxide produced?

In the unbalanced equation shown below, how much iron was present before the reaction if there was

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In the unbalanced equation shown below, how much iron was present before the reaction if there was 2...