1.

The mass of magnesium oxide formed by burning 1.216 g magnesium in excess oxygen is

Answer»

0.416 G
1.616 g
2.016 g
2.816 g

Solution :`2Mg + O_2 to 2mgO`
`2 xx 24g Mg to 2 xx (24 + 16)`
`48 Mg to 80 g MgO`
` therefore 1.216 g Mgto 80/48 xx 1.216`
` = 2.02 g MgO`


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