# What amount, in mol, of carbon dioxide will be formed when three moles of methyl propane are combusted completely?

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2CH3CH(CH3) + 12O2 --> 8CO2 + 10H2O

A. 4

B. 8

C. 12

D. 16

The answer is C. 12, why?

2CH3CH(CH3) + 12O2 --> 8CO2 + 10H2O

A. 4

B. 8

C. 12

D. 16

The answer is C. 12, why?

##### 1 Answer

Feb 18, 2016

#### Answer:

The answer is C.

#### Explanation:

The answer is simple. I have 3 moles of methyl propane, and a ratio 2 to 8 for methyl propane to CO2. I divide 3 by 2 and multiply by 8 in order to get the number of mole needed in the reaction. 3/2 = 1.5 → 1.5 x 8 = 12.