A substance has a melting point of 20°C and a heat of fusion of .The boiling point is and the heat of vaporization is 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.

Question

A substance has a melting point of 20°C and a heat of fusion of  .The boiling point is  and the heat of vaporization is  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.

Quizplus · Accepted Answer

The Answer of A substance has a melting point of 20°C and a heat of fusion of  .The boiling point is  and the heat of vaporization is  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.

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