Question

1)

The following information is given for cobalt at 1 atm:

= 3097.00°C		(3097.00°C) =  J/g
= 1495.00°C		(1495.00°C) =  J/g
Specific heat solid = 0.4180 J/g °C
Specific heat liquid = 0.6860 J/g °C

A 42.50 g sample of solid cobalt is initially at 1483.00°C. If the sample is heated at constant pressure ( = 1 atm),  kJ of heat are needed to raise the temperature of the sample to 1900.00°C.

2)

The following information is given for water at 1 atm:

= 100.00°C		(100.00°C) =  J/g
= 0.00°C		(0.00°C) =  J/g
Specific heat gas = 2.010 J/g °C
Specific heat liquid = 4.184 J/g °C

A 36.30 g sample of liquid water is initially at 71.50°C. If the sample is heated at constant pressure ( = 1 atm),  kJ of energy are needed to raise the temperature of the sample to 118.90°C.

Answer 1