Question

If the specific heat of aluminum is 899 J/kg °C and the specific heat of water is 4190 J/kg °C, which of the following statements is true? A. Aluminum produces more energy than water does when it is heated. B. It takes more energy to heat 1 kg of water 1°C than it does to heat the same amount of aluminum. C. It is impossible to heat water to a high temperature because it requires too much energy. D. It takes more energy to heat 1 kg of aluminum 1°C than it does to heat the same amount of water.

Answer 1

Al: Cs = 899 J/(kg*°C) means that Aluminum requires 899 joules of heat to increase the temperature of 1 kg in 1°C.

Water: Cs = 4190 J / (kg * °C) means that water requires 4190 joules of heat to increase the temperature of 1 kg in 1°C.

Then, the answer is concluded directly from above explanations of what specific heat means for Al and water:"It takes more energy to heat 1 kg of water 1°C than it does to heat the same amount of aluminum"