Question

How much heat is needed to condense 22.25 grams of nitrogen gas at –195.8°C? The latent heat of vaporization of nitrogen is 199.0 J/g.

Answer 1

-4,428 is the answer to this question.

Answer 2

The correct answer to the question is : 4427.75 J.

EXPLANATION :

As per the question, the mass of the nitrogen gas m = 22.25 gram.

The latent heat of vaporization of nitrogen $L_{v} =199.0\ J/g$

As per the question, the nitrogen gas will condense. During condensation, the nitrogen gas will lose or release heat equal to its latent heat.

Hence, the heat released by nitrogen gas Q = $mL_{v}$

                                                                          = 22.25 × 199.0 J

                                                                          = 4427.75 J.

Hence, the amount of heat released will be 4427.75 J.