Plz answer this question plz
plz don't say u don't know =_=
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Chromium is manufactured by heating a mixture of chromium(III) oxide with aluminium powder.
Cr2O3(s) + 2Al(s) --> 2Cr(s) + Al2O3 (s)
a) calculate the mass of aluminium needed to react with 1 tonne of chromium(III) oxide.
b) calculate the mass of chromium produced from 1 tonnes of chromium (III) oxide.
(RAM: O=16, Al=27, Cr=52)
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