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Another student points out that Jasmine’s calculation relates only to the water. The student wonders if it is possible to determine the amount of energy in the sample of Cheetos.

Explain why you can answer part (A), even though the calculation in Question 4 related only to the water. In your explanation, refer to evidence from the experiment and appropriate chemical laws.

User Jyotirup
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In Question 4, Jasmine calculated the amount of energy absorbed by the water when the burning Cheeto was placed in it. Although the calculation related only to the water, we can still determine the amount of energy released by the burning Cheeto. This is because of the Law of Conservation of Energy, which states that energy cannot be created or destroyed, only transferred or transformed from one form to another. In this case, the energy released by the burning Cheeto is transferred to the water, causing its temperature to increase.

Therefore, we can use the amount of energy absorbed by the water (calculated in Question 4) as a measure of the amount of energy released by the burning Cheeto. We can assume that the energy released by the Cheeto is equal to the energy absorbed by the water. This is known as the principle of calorimetry, which states that the heat lost by the object being studied is equal to the heat gained by the surrounding medium.

However, it is important to note that this assumption is only valid if all the energy released by the Cheeto is transferred to the water. In reality, some energy may be lost to the surroundings, such as through radiation or conduction. Therefore, the calculated value for the energy released by the Cheeto may be slightly lower than the actual value.

User Bhilstrom
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