Liquid nitrogen, which has a boiling point of 77 K, is

Last updated: 7/10/2022

Liquid nitrogen, which has a boiling point of 77 K, is commonly used to cool substances to low temperatures. How much energy must be removed from 1.0 kg of gaseous nitrogen at 77 K for it to completely liquefy? Assume the latent heat of liquid nitrogen is 2.01 x 10 J/kg. Answer in units of J.