Anonymous
Anonymous asked in Education & ReferenceHomework Help · 5 months ago

Help with homework question?

If we have a container of 500 grams of dry air to which we apply 2000 calories of heat energy (assume no other sources or sinks of heat). Will the change in air temperature be higher or lower than that for sand?

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  • 5 months ago
    Favorite Answer

    An equal mass of sand treated with the same amount of heat would reach a higher temperature than the air, since air has the greater heat capacity.

    (2000 cal) / (0.24 cal/g°C air) / (500 g) = 16.7°C air

    (2000 cal) / (0.19 cal/g°C sand) / (500 g) = 21.1°C air

  • Anonymous
    5 months ago

    Higher. Dry air has a lower specific heat value than sand, so it takes less heat to increase its temperature.

  • Lôn
    Lv 7
    5 months ago

    Lower....it has a greater specific heat capacity than sand.

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