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    What mass of oxygen is produced when 136g of hydrogen peroxide molecules decompose?

    Please could you show step by step how you get your answer,thanks...
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    H2O2 => H2 + O2

    136g H2O2, what is that in moles?

    since molar ratio is 1:1 just multiply the number of moles of H2O2 by the relative atomic mass oxygen gas.
 
 
 
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