Question

A group of students burned three different kinds of food and

collected data.
Food
sample
Mass
Starting
temp.
Ending
temp.
1
100 g
20°C
24°C
2
50 g
20°C
30°C
3
110 g
20°C
27°C
6a. How many calories were contained in each piece of food? Remember:
cal = m XAT

Answer 1

The question involves calculating the energy content of three food samples based on their mass and temperature change, using principles of calorimetry. By applying the formula cal = m x ΔT, one can determine the calories contained in each food piece.

Step-by-step explanation:

The student's question involves the determination of the amount of calories contained in each piece of food sample by using a method similar to bomb calorimetry. According to the formula for calorie calculation (cal = m x ΔT, where m is the mass and ΔT is the change in temperature), we can calculate for each food sample as follows:

• Food sample 1: m = 100 g, ΔT = 24°C - 20°C = 4°C; cal = 100 g x 4°C
• Food sample 2: m = 50 g, ΔT = 30°C - 20°C = 10°C; cal = 50 g x 10°C
• Food sample 3: m = 110 g, ΔT = 27°C - 20°C = 7°C; cal = 110 g x 7°C

By calculating the caloric content, we can determine how much energy was released by each food sample when burned. This illustrates the principle of calorimetry, which is used to measure the energy content of foods and other substances.

Answer 2

sample

Mass

Starting

temp.