Of state. Contents and Concepts 1. Comparison of Gases, Liquids, and Solids Changes of State


kg of dichlorodifluoromethane must be evaporated



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Chapter 11 in English 1-19

1.22 kg of dichlorodifluoromethane must be evaporated.

Answer Check The calculations are similar to the stoichiometry calculations we did in Chapter 3. As in those calculations, make sure that the units properly cancel to convert those of the known quantity to the units of the desired quantity. Exercise 11.1 The heat of vaporization of ammonia is 23.4 kJ/mol. How much heat is required to vaporize 1.00 kg of ammonia? How many grams of water at 0_C could be frozen to ice at 0_C by the evaporation of this amount of ammonia?

See Problems 11.43, 11.44, 11.45, and 11.46.




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