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Praxis II General Science

Category - Major Ideas

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Which of the following materials is expected to have the highest heat capacity?

Steel
Air
Water
Oil
Copper

Explanation

Answer: C - Water has one of the highest heat capacities at 4.18 J/g*K. Most metals have significantly lower heat capacities, in the range between 0.2 and 1.0 J/g*K. In fact, there are very few substances that have a higher heat capacity than water, with the select few being hydrogen, helium, and ammonia.

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