Question

which of the following student responses best explains the difference between the experimental data and the nutrition facts? choose 1 answer: a student 1: \some of the energy released by the chip sample was absorbed by the water, but some of it was absorbed by other parts of the surroundings. any energy not absorbed by the water was not accounted for in the calculations.\ b student 2: \some of the energy in the chip sample was used to keep the chips burning. this reduced the overall quantity of energy released by the chips.\ c student 3: \the energy in the chip sample was not conserved during the experiment. the energy released by the chips left the system, and energy is only...

Explanation:

• For Student 1: In experiments measuring energy from burning food (like chips), energy is often measured by how much it heats water. But in reality, some energy is lost to the surroundings (air, equipment, etc.). If those lost energies aren't accounted for in calculations (which only use water - absorbed energy), this explains the difference between experimental data and Nutrition Facts (which are more accurate or account for total energy).
• For Student 2: The energy used to "keep the chips burning" is part of the energy release process (combustion), and energy used for combustion doesn't reduce the total energy released (the total energy in the chip is what's available to be released, and sustaining combustion is part of using that energy, not reducing the released amount). So this is incorrect.
• For Student 3: Energy is always conserved (Law of Conservation of Energy), so the claim that energy was not conserved is wrong. Also, the reasoning about energy leaving the system and conservation is misapplied.

Answer:

A. Student 1: "Some of the energy released by the chip sample was absorbed by the water, but some of it was absorbed by other parts of the surroundings. Any energy not absorbed by the water was not accounted for in the calculations."