Problem Set 2: Phase Change
- How much energy in joules is required to boil away 0.50 L of liquid nitrogen at -210°C? (Density of liquid nitrogen = 0.80 x 103 kg/m3)
- A 0.500-kilogram piece of ice at 20°C is converted to steam at 115°C. How much heat must be applied to do this?
- If 0.500 kg of ice at 0°C is added to 0.300 kg of water at 25°C in a 0.100-kilogram aluminum calorimeter cup, what is the final temperature of the water?
- Steam at 100°C is bubbled into 0.250 kg of water at 20°C in a calorimeter cup. How much steam will have been added when the water in the cup reaches 60°C?
- Ice is added to 0.75 L of tea at 20°C to make very cold iced tea (0°C). If enough 0°C ice is added so that the mixture is all liquid, how much liquid is in the pitcher when this occurs? (Density of water = 1.00 x 103 kg/m3; also, assume that ice tea has the same density as water)
- A volume of 0.50 L of water at 16°C is put into an aluminum ice cube tray of mass 0.250 kg at the same temperature. How much energy must be removed from this system by the refrigerator to turn the water into ice at -8°C?
- Suppose 3.0 cm of rain at 10°C falls on a rectangular region of dimensions 2.0 km x 3.0 km. How much energy was released when water vapor condensed to form this amount of rain?
Some constants:
- Lf = 3.34 x 105 J/kg
- Lv = 2.26 x 106J/kg
Problem Set 2: Phase Change
- How much energy in joules is required to boil away 0.50 L of liquid nitrogen at -210°C? (Density of liquid nitrogen = 0.80 x 103 kg/m3)
- A 0.500-kilogram piece of ice at 20°C is converted to steam at 115°C. How much heat must be applied to do this?
- If 0.500 kg of ice at 0°C is added to 0.300 kg of water at 25°C in a 0.100-kilogram aluminum calorimeter cup, what is the final temperature of the water?
- Steam at 100°C is bubbled into 0.250 kg of water at 20°C in a calorimeter cup. How much steam will have been added when the water in the cup reaches 60°C?
- Ice is added to 0.75 L of tea at 20°C to make very cold iced tea (0°C). If enough 0°C ice is added so that the mixture is all liquid, how much liquid is in the pitcher when this occurs? (Density of water = 1.00 x 103 kg/m3; also, assume that ice tea has the same density as water)
- A volume of 0.50 L of water at 16°C is put into an aluminum ice cube tray of mass 0.250 kg at the same temperature. How much energy must be removed from this system by the refrigerator to turn the water into ice at -8°C?
- Suppose 3.0 cm of rain at 10°C falls on a rectangular region of dimensions 2.0 km x 3.0 km. How much energy was released when water vapor condensed to form this amount of rain?
Some constants:
- Lf = 3.34 x 105 J/kg
- Lv = 2.26 x 106 J/kg
Problem Set 2: Phase Change
- How much energy in joules is required to boil away 0.50 L of liquid nitrogen at -210°C? (Density of liquid nitrogen = 0.80 x 103 kg/m3)
- A 0.500-kilogram piece of ice at 20°C is converted to steam at 115°C. How much heat must be applied to do this?
- If 0.500 kg of ice at 0°C is added to 0.300 kg of water at 25°C in a 0.100-kilogram aluminum calorimeter cup, what is the final temperature of the water?
- Steam at 100°C is bubbled into 0.250 kg of water at 20°C in a calorimeter cup. How much steam will have been added when the water in the cup reaches 60°C?
- Ice is added to 0.75 L of tea at 20°C to make very cold iced tea (0°C). If enough 0°C ice is added so that the mixture is all liquid, how much liquid is in the pitcher when this occurs? (Density of water = 1.00 x 103 kg/m3; also, assume that ice tea has the same density as water)
- A volume of 0.50 L of water at 16°C is put into an aluminum ice cube tray of mass 0.250 kg at the same temperature. How much energy must be removed from this system by the refrigerator to turn the water into ice at -8°C?
- Suppose 3.0 cm of rain at 10°C falls on a rectangular region of dimensions 2.0 km x 3.0 km. How much energy was released when water vapor condensed to form this amount of rain?
Some constants:
- Lf = 3.34 x 105 J/kg
- Lv = 2.26 x 106 J/kg