9.5 Investigating food energy — Visual & Photo Quiz

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Questions count: 1
Passing grade: B+

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Look at the food calorimeter setup showing a burning peanut mounted on a mounted needle underneath a boiling tube of water. What major source of heat loss causes calculated food energy to be lower than the true nutritional value?

Heat lost to the surrounding air, the glass boiling tube, and incomplete combustion of the nut

The peanut contains no chemical energy

Water destroys thermal energy upon contact

The thermometer absorbs all the heat