Assuming that gasoline is 100% isooctane, that isooctane burns to produce only co2 and h2o, and that the density of isooctane is 0.792 g/ml, what mass of co2 (in kilograms) is produced each year by the annual u. s. gasoline consumption of 4.6×1010l?

1.12 × 10¹¹ kg of CO₂

Explanation:

Let's consider the combustion of isooctane.

C₈H₁₈(l) + 12.5 O₂(g) ⇒ 8 CO₂(g) + 9 H₂O(l)

We can establish the following relations:

Then, for 4.6 × 10¹⁰ L of gasoline (assuming that gasoline is 100% isooctane):

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