B. If 25.0 kJ of heat is lost by 0.500 mol of substance A initially at 110 °C, what is the final temperature of substance A? For substance A: molar heat of vaporization = 43.4 kJ/mol molar heat of fusion = 4.9 kJ/mol molar heat capacity of the liquid = 112.4 J/mol-K molar heat capacity of the gas = 37.12 J/mol-K Select one: Oa. 52 °C Ob. 30 °C Oc. 78 °C Od. 83 °C

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B. If 25.0 kJ of heat is lost by 0.500 mol of substance A initially at 110 °C, what is the final temperature of
substance A?
For substance A:
molar heat of vaporization = 43.4 kJ/mol
molar heat of fusion = 4.9 kJ/mol
molar heat capacity of the liquid = 112.4 J/mol:K
molar heat capacity of the gas = 37.12 J/mol-K
Select one:
Oa. 52 °C
Ob. 30 °C
Oc. 78 °C
Od. 83 °C
Transcribed Image Text:B. If 25.0 kJ of heat is lost by 0.500 mol of substance A initially at 110 °C, what is the final temperature of substance A? For substance A: molar heat of vaporization = 43.4 kJ/mol molar heat of fusion = 4.9 kJ/mol molar heat capacity of the liquid = 112.4 J/mol:K molar heat capacity of the gas = 37.12 J/mol-K Select one: Oa. 52 °C Ob. 30 °C Oc. 78 °C Od. 83 °C
Given the heating curve below for an amount of substance A at 1.0 atm pressure:
150
100
78 °C
50
-50
-100
-114 °C
-150
-200
Heat added
Temperature (°C)
Transcribed Image Text:Given the heating curve below for an amount of substance A at 1.0 atm pressure: 150 100 78 °C 50 -50 -100 -114 °C -150 -200 Heat added Temperature (°C)
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