
(a)
Interpretation:
Some of the energy losses that take place when driving a car has to be listed out.
Concept Introduction:
Heat of combustion: It is also known as potential heat of fuel. Heat of combustion of carbon depends on its allotropic form.
A fuel is a substance which releases energy in the form of heat while undergoing combustion. Hydrocarbons which have high heats of combustion make it a best fuel.
Combustion reaction: It is the reaction in which hydrocarbons are heated in presence of oxygen results to give water and carbon dioxide with heat.
(b)
Interpretation:
Given the assumption that only 15% of the energy from fuel combustion is used to move the vehicle. The percent used to move the passengers has to be estimated.
Concept Introduction:
Heat of combustion: It is also known as potential heat of fuel. Heat of combustion of carbon depends on its allotropic form.
A fuel is a substance which releases energy in the form of heat while undergoing combustion. Hydrocarbons which have high heats of combustion make it a best fuel.
Combustion reaction: It is the reaction in which hydrocarbons are heated in presence of oxygen results to give water and carbon dioxide with heat.

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Chapter 4 Solutions
Chemistry in Context
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