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Physics Homework Help?

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A 49 g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. Assume for simplicity that the specific heat of ice is a constant and is equal to 2100 J/kg⋅C∘.

How much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporization of 200 kJ/kg?
asked Nov 29, 2015 in PHYSICS by anonymous

1 Answer

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The mass of ice cube is 49 g.

Specific heat of ice cube is image.

The boiling point of nitrogen is image

Latent heat of vaporization of nitrogen is image.

Total amount of heat lost by the ice cube is equal to the amount of heat gained by the liquid nitrogen.

image

image

image

image

Amount of the nitrogen evaporated is 100 g.

answered Nov 30, 2015 by Lucy Mentor
edited Nov 30, 2015 by Lucy

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