Question

your experimental energy released per gram of a pistachio is 5.43 (experimental). the nutritional label said the energy released per gram of a pistachio is: 5.71 (theoretical). select the most likely reason the experimental heat of combustion is less than the theoretical value. the heat absorbed by the water was smaller than expected. the mass of fuel burned was smaller than expected. the mass of fuel burned was larger than expected. hmm not quite. this reasoning would result in the experimental heat of combustion being larger than the theoretical value. what reason would result in a smaller heat of combustion than expected? the heat absorbed by the water was larger than expected. 2 / 9 submissions used. score: 0.1

Explanation:

The heat of combustion is calculated based on the mass of fuel burned and the heat absorbed by the water. If the mass of fuel burned is smaller than expected, the experimental heat of combustion will be less than the theoretical value. When less fuel burns, less energy is released overall, leading to a lower - measured heat of combustion.

Answer:

The mass of fuel burned was smaller than expected.