Question

select the correct answer. an engineer designing a new type of engine needs a liquid that can be heated and cooled quickly with as little exchange of energy as possible. which property should the engineer primarily look for in the liquid? o a. low thermal conductivity o b. low specific heat capacity o c. high reactivity o d. high internal energy o e. high density

Explanation:

The specific - heat capacity of a substance is the amount of heat energy required to raise the temperature of a unit mass of the substance by one degree Celsius. A liquid with low specific - heat capacity will require less energy to change its temperature, meaning it can be heated and cooled quickly. Thermal conductivity is about how well heat is transferred through a material, reactivity is about chemical reactions, internal energy is a state function related to the total energy of the system, and density is mass per unit volume. None of these other properties directly relate to quick heating and cooling with little energy exchange like specific - heat capacity does.

Answer:

B. low specific heat capacity