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Mercury, with a freezing point of -38.8°C, is the only metal that is liquid at room temperature. How much heat energy (in joules) must be released by mercury if 1.60 mL of the metal is cooled from room temperature (23.0°C) to -38.8°C and then frozen to a solid? (The density of mercury is 13.6 g/cm. Its specific heat is 0.140 J/g*K and its heat of fusion is 11.4 3/g.)

Mercury, with a freezing point of -38.8°C, is the only metal that is liquid at room temperature. How much heat energy (in joules) must be released by mercury if 1.60 mL of the metal is cooled from room temperature (23.0°C) to -38.8°C and then frozen to a solid? (The density of mercury is 13.6 g/cm. Its specific heat is 0.140 J/g*K and its heat of fusion is 11.4 3/g.)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Mercury, with a freezing point of -38.8°C, is the only metal that is liquid at room temperature. How much heat energy (in joules) must be released by mercury if1.60 mL of the metal is cooled from roorm temperature (23.0°C) to -38.8°C and then frozen to a solid? (The density of mercury is 13.6 g/cm. Its specific heat is 0.140 J/g•K and its heat of fusion is 11.4 1/g.) Chloromethane, CH CI, is used as a topical anesthetic. The temperature at which CH3CI liquid turns into a vapor (the boiling point) is -24.09°C. What quantity of heat must be absorbed by the liquid to convert 170. g of liquid to a vapor at -24.09°C? The heat of vaporization of CH Cl is 21.40 kJ/mol. kJ MEK Ethanol, CH5OH, boils at 78.29°C. How much heat energy (in kilojoules) is required to heat 1.40 kg of this liquid from 23.0°C to the boiling polnt and then change the liquid completely to a vapor at that temperature? (The specific heat of liquid ethanol is 2.44 J/g-K and its enthalpy of vaporization is 38.56 kJ/mol.) kJ Submit Answer
Transcribed Image Text:Mercury, with a freezing point of -38.8°C, is the only metal that is liquid at room temperature. How much heat energy (in joules) must be released by mercury if1.60 mL of the metal is cooled from roorm temperature (23.0°C) to -38.8°C and then frozen to a solid? (The density of mercury is 13.6 g/cm. Its specific heat is 0.140 J/g•K and its heat of fusion is 11.4 1/g.) Chloromethane, CH CI, is used as a topical anesthetic. The temperature at which CH3CI liquid turns into a vapor (the boiling point) is -24.09°C. What quantity of heat must be absorbed by the liquid to convert 170. g of liquid to a vapor at -24.09°C? The heat of vaporization of CH Cl is 21.40 kJ/mol. kJ MEK Ethanol, CH5OH, boils at 78.29°C. How much heat energy (in kilojoules) is required to heat 1.40 kg of this liquid from 23.0°C to the boiling polnt and then change the liquid completely to a vapor at that temperature? (The specific heat of liquid ethanol is 2.44 J/g-K and its enthalpy of vaporization is 38.56 kJ/mol.) kJ Submit Answer
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