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1.0 g of magnesium is burnt with 0.56 g ...

1.0 g of magnesium is burnt with 0.56 g `O_(2)` in a closed vessel. Which reactant is left in excess and how much?

A

Mg, 0.16 g

B

`O_2,` 0.16 g

C

Mg, 0.44 g

D

`O_2,` 0.28 g

Text Solution

Verified by Experts

The correct Answer is:
A
24 g Mg requires 16 oxygen
`therefore` 0.56 g oxygen requires 0.84 g M
`2Mg+O_2 to 2Mgo`
`therefore` Mg left = 0.16 g
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