1. Pam has a 1000 watt curling iron, which uses 1 kJ in
1 sec to heat up. If the heat capacity of the curling iron is 250 J/°C,
determine the temperature change in 1 second and in 1 minute.
2. If you burn enough natural gas on your gas stove to
release 150 kJ of energy and manage to capture all of this energy in a
frying pan with a mass of 550 g and a specific heat capacity of 0.89 J/°C
g, determine how hot the frying pan gets if its initial temperature was
23°C.
3. How many ice cubes are needed to cool 500. g of water
initially at 23°C to 0°C if each cube at 0°C contains one mole
of water ?