A hydrocarbon has $3 g$ carbon per gram of hydrogen, hence the simplest formula is :

C H_{4}

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C_{6} H_{6}

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C_{3} H_{8}

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C H_{2}

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Solution

The correct option is A $C H_{4}$
A hydrocarbon has $3$ g carbon per gram of hydrogen.
So, $\frac{3}{12}$ moles of carbon combine with $1$ mole of $H$ .
Therefore, $1$ mole of $C$ combines with $4$ moles of $H$ .
So, the simplest formula is $C H_{4}$ .

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A hydrocarbon has 3g carbon per gram of hydrogen, hence the simplest formula is :

The correct option is A CH4A hydrocarbon has 3 g carbon per gram of hydrogen.So, 312 moles of carbon combine with 1 mole of H.Therefore, 1 mole of C combines with 4 moles of H.So, the simplest formula is CH4.

A hydrocarbon has $3 g$ carbon per gram of hydrogen, hence the simplest formula is :

The correct option is A $C H_{4}$
A hydrocarbon has $3$ g carbon per gram of hydrogen.
So, $\frac{3}{12}$ moles of carbon combine with $1$ mole of $H$ .
Therefore, $1$ mole of $C$ combines with $4$ moles of $H$ .
So, the simplest formula is $C H_{4}$ .