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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 of `O_(2)` in a closed vessel. Which reactant is left in excess and how much ?

A

Mg , 0.44 g

B

`O_(2)` , 0.28 g

C

Mg , 0.16 g

D

`O_(2)` , 0.16 g

Text Solution

Verified by Experts

The correct Answer is:
C
`underset(2xx24g)(2Mg)+underset(32g)(O_(2))rarr2MgO`
32 g of `O_(2)` react with Mg = 48 g
0.56 g of `O_(2)` react with `Mg=((48g))/((32g))xx(0.56g)`
Mass of mg taken `= 1.0 g`
Mass of Mg left `= (1- 0.84) = 0.16 g`.
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Knowledge Check

  • 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
    (a)`Mg, 0.16 g`
    B
    (b)`O_(2), 0.16 g`
    C
    (c )`Mg, 0.44 g`
    D
    (d)`O_(2), 0.28 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 ? (At. Wt. of Mg = 24, O = 16)

    A
    Mg, 0.16 g
    B
    `O_(2),0.16g`
    C
    `Mg,0.44g`
    D
    `O_(2),0.28g`

  • 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 ? (At. wt. Mg = 24, O = 16)

    A
    Mg, 0.16 g
    B
    `O_2,` 0.16 g
    C
    Mg, 0.44 g
    D
    `O_2,` 0.28 g

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