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The weight of calcium oxide formed by bu...

The weight of calcium oxide formed by burning 20 g of calcium in excess oxygen is-

A

36g

B

56g

C

28g

D

72g

Text Solution

Verified by Experts

The correct Answer is:
C
`2Ca + underset("(excess)")(O_(2)) overset(Delta) to 2CaO`
`(20)/(40) = (1)/(2) ` mole `(1)/(2)` mole
`(1)/(2)` mole of CaO will formed i.e., `(1)/(2) xx 56 = 28 g`
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