A 0.920-gram sample of magnesium is allowed to burn in 0.321 g of oxygen gas.The sole product is magnesium oxide.After the reaction,no oxygen remains and 0.809 g of magnesium oxide has been formed.What mass of magnesium is left unreacted?
A)0.210 g
B)0.432 g
C)1.408 g
D)0.111 g
E)0.488 g

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The Answer of A 0.920-gram sample of magnesium is allowed to burn in 0.321 g of oxygen gas.The sole product is magnesium oxide.After the reaction,no oxygen remains and 0.809 g of magnesium oxide has been formed.What mass of magnesium is left unreacted?
A)0.210 g
B)0.432 g
C)1.408 g
D)0.111 g
E)0.488 g

A 0920-Gram Sample of Magnesium Is Allowed to Burn in 0