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Estimate the energy in one gallon of gasoline (in joules).

Estimate the energy of one tablespoon of peanut butter (in joules).

Estimate the number of tablespoons of peanut butter that is equivalent in energy to one gallon of gasoline.

Estimate the number of 16 oz jars of peanut butter that is equivalent in energy to one gallon of gasoline.

Answer :

A gallon of gasoline holds approximately 130,000,000 joules of energy. One tablespoon of peanut butter contains around 418,680 joules. It would take about 310 tablespoons or nearly 10 jars of peanut butter to equal the energy in one gallon of gasoline.

To estimate the energy in one gallon of gasoline, we can use the given information that a gallon of gasoline contains about 130 MJ of chemical energy. Since 1 MJ (megajoule) is equivalent to 1 million joules, this means a gallon of gasoline has approximately 130,000,000 joules (J) of energy.

For peanut butter, the energy content varies, but a typical value might be around 100 calories (kcal) per tablespoon. Since 1 food calorie (kcal) is equal to 4,186.8 joules, that's approximately 418,680 joules per tablespoon of peanut butter.

To estimate the number of tablespoons of peanut butter equivalent to the energy in one gallon of gasoline, we would divide the total energy in joules of gasoline by the energy per tablespoon of peanut butter. That gives us 130,000,000 J / 418,680 J per tablespoon, which is approximately 310 tablespoons.

Since there are 32 tablespoons in one 16-ounce jar of peanut butter, we could calculate the number of jars by dividing 310 tablespoons by 32, which results in approximately 9.68, or about 10 jars of peanut butter, to match the energy of one gallon of gasoline.

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