2g of magnesium is burnt with 1g O2(oxygen) in a closed vessel . Which reactant is left in excess and how much ? (At. wt. Mg = 24 ; O = 16)
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2Mg + O2 = 2MgO
48g + 32g = 80g
(48/32)g + (32/32)g
1.5g+ 1g = 2.5g
therfore magnesium is excess and by 0.5g.
hope it helps
48g + 32g = 80g
(48/32)g + (32/32)g
1.5g+ 1g = 2.5g
therfore magnesium is excess and by 0.5g.
hope it helps
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