Question

Which of these is NOT a possible reason why the energy calculated from the experiment is always lower than the value given on the nutrition label?

A The snack did not fully react, leaving unmeasured energy
B The energy goes into your stomach
C Some of the energy from the snack is lost to the air and can

Answer 1

Option B is not a possible reason why the energy calculated from the experiment is always lower than the value given on the nutrition label because the energy from the snack does not go into the stomach, but is instead converted into heat energy.
Options A and C are both possible reasons why the energy calculated from the experiment is always lower than the value given on the nutrition label.