Question

The nutritional information on a cereal box shows that one serving of a dry cereal has 200 kilocalories. If a person were to ignite one serving of the cereal in a bowl, the amount of heat given off would be sufficient to raise the temperature of 20 kg of water how many degrees Celsius

Answer 1

Answer:

10°C.

Explanation:

Heat released in any system can be calculated as follows:

Heat released = m c DT

Here, m is the mass , c is the specific heat and DT is the change in temperature.

Heat released = 200 kcalories = 200,000 calories

The mass of water = 20 kg = 20000 g

The specific heat of water = 1 cal / g degree

The rise in the temperature is as follows:

heat released = m c DT

200,000 = 20,000 ( 1) (DT)

DT = 10°C.

Thus, the answer is 10°C.