(a) The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 6-g peanut if the energy from burning it is transferred to 0.5 kg of water held in a 0.1 -kg aluminum cup, causing a 55.9 °C temperature increase? The specific heat of water is 1.00 kcal/kg °C, and the specific heat of aluminum cup is 0.215 kcal/kg °C. Q mp kcal/g

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1. (a) The number of kilocalories in food is determined by calorimetry techniques in which the food is
burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a
6-g peanut if the energy from burning it is transferred to 0.5 kg of water held in a 0.1 -kg aluminum
cup, causing a 55.9 °C temperature increase?
The specific heat of water is 1.00 kcal/kg °C, and the specific heat of aluminum cup is 0.215 kcal/kg
°C.
Q
mp
(b) Compare your answer to labeling information found on a package of peanuts and comment on
whether the values are consistent. A label for unsalted dry roasted peanuts says that 30 g contains
185 calories (kcal).
Find the (Q/m) from calorimetry techniques of the label on a box of roasted peanuts.
Q
m cal
Q
m label
kcal/g
Transcribed Image Text:1. (a) The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 6-g peanut if the energy from burning it is transferred to 0.5 kg of water held in a 0.1 -kg aluminum cup, causing a 55.9 °C temperature increase? The specific heat of water is 1.00 kcal/kg °C, and the specific heat of aluminum cup is 0.215 kcal/kg °C. Q mp (b) Compare your answer to labeling information found on a package of peanuts and comment on whether the values are consistent. A label for unsalted dry roasted peanuts says that 30 g contains 185 calories (kcal). Find the (Q/m) from calorimetry techniques of the label on a box of roasted peanuts. Q m cal Q m label kcal/g
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