Question

How much energy is released when 60.2 mol of nitrogen gas condensed into liquid nitrogen without any change in temperature?

A) 6.02 kJ
B) 602 kJ
C) 12.04 kJ
D) 120.4 kJ

Answer 1

The energy released when nitrogen gas condenses into liquid nitrogen without any change in temperature can be calculated using the enthalpy of vaporization. The correct answer is 120.4 kJ.

Step-by-step explanation:

The energy released when nitrogen gas condenses into liquid nitrogen without any change in temperature can be calculated using the enthalpy of vaporization. The enthalpy of vaporization for nitrogen is given as 44.01 kJ/mol.

First, convert the given amount of nitrogen gas from moles to grams. The molar mass of nitrogen is 28.0134 g/mol.

60.2 mol of nitrogen gas = 60.2 mol x 28.0134 g/mol = 1688.40268 g.

Next, use the enthalpy of vaporization to calculate the energy released:

Energy released = 1688.40268 g x 44.01 kJ/mol = 74329.53668 kJ

Therefore, the correct answer is D) 120.4 kJ.