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How many grams of magnesium oxide are formed when 13.5 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to the following reaction?


i got .496 g
but i know that like way off

  • chem-repost -

    2Mg+O2>>2MgO

    n=PV/RT=13.5/22.4*moles of O2, so you will get twice that in MgO, or 13.5/11.2 moles MgO, so what mass of MgO is that number of moles?

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