Passage IV
A bomb calorimeter is used to determine the amount of heat released when a substance is burned in oxygen (Figure 1). The heat, measured in kilojoules (kJ), is calculated from the change in temperature of the water in the bomb calorimeter. Table 1 shows the amounts of heat released when different foods were burned in a bomb calorimeter. Table 2 shows the amounts of heat released when different amounts of sucrose (table sugar) were burned. Table 3 shows the amounts of heat released when various chemical compounds were burned.
23. Which of the following lists the foods from Tables 1 and 2 in increasing order of the amount of heat released per gram of food?
Your Answer is
Correct Answer is A
Explanation
Because the mass given in table 1 is all 1 g, so when considering the sucrose in table 2, the mass of 1 g should also be selected. Then the smallest heat released is potato, and the largest is cheese, so choose A