A 35 g ice cube at its melting point (0°C) is dropped into an insulated container...
A 35 g ice cube at its melting point (0°C) is dropped into an insulated container of liquid nitrogen. 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? Assume that the specific heat of ice is a constant and is 2100 J/kg-°C.
Homework Answers
Using law of conservation of energy,
mice cice (T1 - T2) = mn Lv
Mass, mn = mice cice (T1 - T2)/Lv
mn = (0.035 x 2100 x (0 - 196)/(200000)
mn = 7.20 x 10^-2 kg
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