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The molar mass of a compound X is 56. its empirical formu...

The molar mass of a compound X is 56. its empirical formula is CH2. X is

A.

butene

B.

butyne

C.

ethene

D.

propene

E.

propyne

View answer & explanation

Correct answer is A

$(CH_{2})x = 56$

$(12 + 2)x = 56$

$14x = 56$

$x = \frac{56}{14}$

$x = 4$

Hence, the empirical formula is $(CH_{2}) \times 4$

= $C_{4}H_{8}$

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