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Chemistry, 24.11.2020 18:20 Siebee23

If 21.4 grams of hydrogen reacts completely with 120.3 grams of oxyge to form hydrogen peroxide, what percent by mass of hydrogen in hydrogen peroxide?

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If 21.4 grams of hydrogen reacts completely with 120.3 grams of oxyge to form hydrogen peroxide, wha...

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