Final answer:
To find the heat needed to condense nitrogen gas, multiply the mass of nitrogen by its latent heat of vaporization. For 22.25 grams at –195.8°C, 4427.75 joules of heat is required.
Step-by-step explanation:
To calculate the heat required to condense a certain mass of nitrogen gas at a specified temperature, the latent heat of vaporization of nitrogen is used. The formula to determine the heat (Q) is:
Q = mass (m) × latent heat of vaporization (Lv)
For 22.25 grams of nitrogen gas:
Q = 22.25 g × 199.0 J/g
Q = 4427.75 joules
Therefore, 4427.75 joules of heat is required to condense 22.25 grams of nitrogen gas at –195.8°C.