jackiediaz
16.01.2021 •
Chemistry
Consider the picture of a gas pump. Which type of gasoline has the highest percentage of octane (the main component of gasoline)?
unleaded: 87 octane rating
mid-grade: 89 octane rating
premium: 91 octane rating
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Ответ:
premium: 91 octane rating
Explanation:
Octane number refers to the percentage or volume fraction of isooctane in a fuel.
The octane number gives a picture of how safe a fuel is for an engine. The higher the octane rating the lesser the tendency of the fuel to cause knocking of the engine.
The type of gasoline with the highest percentage of octane among the options is premium.
Ответ:
the force increases as the wedge decreases
Explanation: