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 one atmosphere.The specific heats for the solid,liquid,and gaseous phases are 600 J/kg ∙ K (solid),1000 J/kg ∙ K (liquid),and 400 J/kg ∙ K (gaseous).How much heat is given up by
Of this substance when it is cooled from 170°C to 86°C at a pressure of one atmosphere?
A)400 kJ
B)200 kJ
C)300 kJ
D)440 kJ
E)640 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 one atmosphere.The specific heats for the solid,liquid,and gaseous phases are 600 J/kg ∙ K (solid),1000 J/kg ∙ K (liquid),and 400 J/kg ∙ K (gaseous).How much heat is given up by 
Of this substance when it is cooled from 170°C to 86°C at a pressure of one atmosphere?
A)400 kJ 
B)200 kJ 
C)300 kJ 
D)440 kJ 
E)640 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 one atmosphere.The specific heats for the solid,liquid,and gaseous phases are 600 J/kg ∙ K (solid),1000 J/kg ∙ K (liquid),and 400 J/kg ∙ K (gaseous).How much heat is given up by 
Of this substance when it is cooled from 170°C to 86°C at a pressure of one atmosphere?
A)400 kJ 
B)200 kJ 
C)300 kJ 
D)440 kJ 
E)640 kJ

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