Question

propane has the formula C3H8.If a sample of propane contains 0.20 moles of C, how many moles of H are present

Answer 1

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Answer 2

Answer: 0.533 moles of hydrogen are present.

Explanation:

In a molecule of propane $(C_3H_8)$, 2 elements are present: Carbon and hydrogen.

By Stoichiometry,

3 moles of carbon reacts with 8 moles of hydrogen to form 1 mole of propane.

So, 0.20 moles of carbon will react with = $\frac{8}{3}\times 0.20$ = 0.533 oles of hydrogen.

Hence, a propane having 0.20 moles of carbon will therefore, contain 0.533 moles of hydrogen in it.