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Questions and Answers
What is the primary purpose of a transportation fuel?
What is the primary purpose of a transportation fuel?
- To consume oxygen
- To serve as a reactant in fuel cells
- To release energy as electric power
- To carry energy in chemical form (correct)
Why is it preferable for a transportation fuel not to carry more than one reactant on a vehicle?
Why is it preferable for a transportation fuel not to carry more than one reactant on a vehicle?
- To minimize the weight of the vehicle
- To reduce the risk of explosions
- To obtain the second reactant from the atmosphere (correct)
- To avoid the need for multiple types of engines
Why are hydrogen and carbon considered unique elements for making fuel?
Why are hydrogen and carbon considered unique elements for making fuel?
- Their oxides are non-toxic
- They have enthalpy of oxidation greater than 10 kJ g-1 (correct)
- Because they are the most abundant elements in nature
- Due to their high energy densities as solids
What is the purpose of including oxygen atoms in a fuel?
What is the purpose of including oxygen atoms in a fuel?
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Why is nitrogen considered a viable element for making fuel?
Why is nitrogen considered a viable element for making fuel?
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