What is the molecular mass of $C_{2} H_{4} ?$

26

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14

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28

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16

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Solution

The correct option is C $28$
Molecular mass of $C_{2} H_{4} = (2 \times a t o m i c m a s s o f c a r b o n)$ $+ (4 \times a t o m i c m a s s o f h y d r o g e n)$
$= (2 \times 12) + (4 \times 1)$
$= 28$
Option $C$ is correct.

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