So i have been doing thsi question for about a week now and it's about liquid nitrogen. Here it is. Liquid nitrogen is used in many low-temperature experiments. It is widely available, and cheaper than gasoline! How much heat must be removed from room temperature (20C) nitrogen gas to produce 1.0 L of liquid nitrogen? The density of liquid nitrogen is 810kg/m^3? what id id was i found the amount of moles of nitrogen and used it in the forumla Q=nCvT The Cv is a C subscript V which is the molar specific heat capacities of gases. well i don't know what other ways i can do this, so if someone would help that would be great!