Answer:
210 kg
Explanation:
The chemical reaction will look like this:
gasoline + O₂ (oxygen) → CO₂ (carbon dioxide) + H₂O (water) + heat
Now in chemical reactions the quantity of the reactants (gasoline + oxygen) is equal to the quantity of products (carbon dioxide + water), so from this principle we may determine:
combined mass of carbon dioxide and water produced = mass of gasoline + mass of oxygen
combined mass of carbon dioxide and water produced = 42 + 168 = 210 kg