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A Substance Has a Melting Point of 20°C and a Heat

Question 34

Multiple Choice

A substance has a melting point of 20°C and a heat of fusion of 3.9 × 104 J/kg.The boiling point is A substance has a melting point of 20°C and a heat of fusion of 3.9 × 10<sup>4</sup> J/kg.The boiling point is and the heat of vaporization is 7.8 × 10<sup>4</sup> J/kg at a pressure of 1.0 atm.The specific heats for the solid,liquid,and gaseous phases are 600 J/(kg∙K) ,1000 J/(kg∙K) ,and 400 J/(kg∙K) ,respectively.The quantity of heat required to raise the temperature of of the substance from to at a pressure of 1.0 atm,is closest to A) 620 kJ. B) 470 kJ. C) 560 kJ. D) 210 kJ. E) 770 kJ. and the heat of vaporization is 7.8 × 104 J/kg at a pressure of 1.0 atm.The specific heats for the solid,liquid,and gaseous phases are 600 J/(kg∙K) ,1000 J/(kg∙K) ,and 400 J/(kg∙K) ,respectively.The quantity of heat required to raise the temperature of A substance has a melting point of 20°C and a heat of fusion of 3.9 × 10<sup>4</sup> J/kg.The boiling point is and the heat of vaporization is 7.8 × 10<sup>4</sup> J/kg at a pressure of 1.0 atm.The specific heats for the solid,liquid,and gaseous phases are 600 J/(kg∙K) ,1000 J/(kg∙K) ,and 400 J/(kg∙K) ,respectively.The quantity of heat required to raise the temperature of of the substance from to at a pressure of 1.0 atm,is closest to A) 620 kJ. B) 470 kJ. C) 560 kJ. D) 210 kJ. E) 770 kJ. of the substance from A substance has a melting point of 20°C and a heat of fusion of 3.9 × 10<sup>4</sup> J/kg.The boiling point is and the heat of vaporization is 7.8 × 10<sup>4</sup> J/kg at a pressure of 1.0 atm.The specific heats for the solid,liquid,and gaseous phases are 600 J/(kg∙K) ,1000 J/(kg∙K) ,and 400 J/(kg∙K) ,respectively.The quantity of heat required to raise the temperature of of the substance from to at a pressure of 1.0 atm,is closest to A) 620 kJ. B) 470 kJ. C) 560 kJ. D) 210 kJ. E) 770 kJ. to A substance has a melting point of 20°C and a heat of fusion of 3.9 × 10<sup>4</sup> J/kg.The boiling point is and the heat of vaporization is 7.8 × 10<sup>4</sup> J/kg at a pressure of 1.0 atm.The specific heats for the solid,liquid,and gaseous phases are 600 J/(kg∙K) ,1000 J/(kg∙K) ,and 400 J/(kg∙K) ,respectively.The quantity of heat required to raise the temperature of of the substance from to at a pressure of 1.0 atm,is closest to A) 620 kJ. B) 470 kJ. C) 560 kJ. D) 210 kJ. E) 770 kJ. at a pressure of 1.0 atm,is closest to


A) 620 kJ.
B) 470 kJ.
C) 560 kJ.
D) 210 kJ.
E) 770 kJ.

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