Question

A kilocalorie of heat is required to raise the temperature of A) 1 g of water from 14 °C to 15 °C. B) 1 g of water by 10 °C. C) 10 g of water by 10 °C. D) 100 g of water by 10 °C. E) 100 g of water by 100 °C.

Answer 1

The amount of heat required to raise the temperature of water by different amounts can be calculated using the specific heat of water. A kilocalorie of heat is needed to raise the temperature of 1 g of water by 15 °C. The amount of heat required increases proportionally with the mass and temperature change.

Step-by-step explanation:

The specific heat of water is 4.184 J/g °C. Since 1 kilocalorie (kcal) is equivalent to 1000 calories (cal), we can use this value to determine the amount of heat required to raise the temperature of different amounts of water by different temperatures.

A) To raise the temperature of 1 g of water from 14 °C to 15 °C, 1 kilocalorie (kcal) is required.

B) To raise the temperature of 1 g of water by 10 °C, 10 kilocalories (kcal) are required.

C) To raise the temperature of 10 g of water by 10 °C, 100 kilocalories (kcal) are required.

D) To raise the temperature of 100 g of water by 10 °C, 1000 kilocalories (kcal) are required.

E) To raise the temperature of 100 g of water by 100 °C, 10000 kilocalories (kcal) are required.

Answer 2

1 g of water from 14 °C to 15 °C.

Step-by-step explanation:

Heat may be defined as the form of energy. The heat can be absorbed during the reaction or heat can be released during the reaction depending upon the time of reaction.

The kilocalorie of heat is used to measure the heating or the metabolization of the food. The kilocalorie of heat means the amount of the heat that are required to raise the 1 gram or kilogram of water by 1 degree celcius. The 1 g of water has been raised by the difference of 1 1 degree celcius in14 °C to 15 °C.

Thus, the correct answer is option (A).