Chapter 21, Problem 21.83QP

Interpretation Introduction

Interpretation: The total heat intake (in kilojoules) of nitrogen atom when the atmosphere is warms up by ${\text{3}}^{\text{o}}\text{C}$ during the next 50 years and the amount of ice melted by the temperature rise should be determined. Molar heat capacity of diatomic molecule and the molar heat of fusion of ice are given.

Concept Introduction:

• Molar heat capacity:  is the amount of heat energy required to raise the temperature of 1 mole of a substance.
• Molar heat of fusion: It is the amount of heat necessary to melt 1 mole of a substance as its melting point.
• Melting point of substance is the temperature at which the solid and liquid phases of a substance are in equilibrium at a specified pressure.
• $\text{Number of moles of the given substance }\text{=}\frac{\text{Given}\text{mass}\text{of}\text{the}\text{substance}\text{in}\text{g}}{\text{Molar}\text{mass}\text{in}\text{mol/g}}$
• To determine: the heat absorbed by the diatomic molecule.