heinrich adds lots of oxygen gas to some iron to produce 110g. of iron (III) oxide. How many grams of iron did she start with?
I choose this could help. including tension to the oxygen make a compressed oxygen widely used to be pressurized oxygen. including tension to oxygen make it much less reactive or stable. including a compressed oxygen to the iron(III)oxide only make the yield under the reaction of iron(III)oxide with none compressed oxygen. occasion 2 Fe^ +3 + O^ -2 (not compressed) Fe2O3 yield approximately 2g (it particularly is only an occasion) in 2 Fe^ +3 + O^ -2 (utilising compressed) Fe2O3 yield in basic terms 1g (it particularly is only an occasion) see utilising a robust oxygen low the quantity of yield of iron(III)oxide.
Iron Fe, atomic mass 56 Iron(III)oxide Fe2O3, molecular weight 160 110g / 160 * 56 * 2 77g Iron at the start.