The mass of N 2 (l) vaporized if the temperature of both Hg and liquid N 2 becomes equal needs to be calculated. Concept introduction: When a crystalline solid is heated gradually its atoms/ions starts to vibrate. Finally, at a certain temperature the ordered structure of crystalline solid breaks. Due to this, solid is converted to a liquid. This is referred to melting/fusion and the temperature at which this phenomenon occurs is called melting point. The reverse process is freezing, and temperature is called freezing point. Freezing point and melting point of a same substance are identical. The temperature is constant with melting and freezing of solids and liquids. The amount of heat required to melt a solid is called enthalpy of fusion, Δ f H .

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Chapter 12, Problem 104IAE

Interpretation Introduction

Interpretation:

The mass of N₂(l) vaporized if the temperature of both Hg and liquid N₂becomes equal needs to be calculated.

Concept introduction:

When a crystalline solid is heated gradually its atoms/ions starts to vibrate. Finally, at a certain temperature the ordered structure of crystalline solid breaks. Due to this, solid is converted to a liquid. This is referred to melting/fusion and the temperature at which this phenomenon occurs is called melting point. The reverse process is freezing, and temperature is called freezing point. Freezing point and melting point of a same substance are identical. The temperature is constant with melting and freezing of solids and liquids. The amount of heat required to melt a solid is called enthalpy of fusion, ΔfH.

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