if 20mj of solar energy is absorbed by 100kg of clay soil, what is the change in temperature (degree C)? what would be the temperature change for 100 kg of water?
if 20mj of solar energy is absorbed by 100kg of clay soil, what is the change in temperature (degree C)? what would be the temperature change for 100 kg of water?
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if 20mj of solar energy is absorbed by 100kg of clay soil, what is the change in temperature (degree C)? what would be the temperature change for 100 kg of water?
determine the amount of energy that will be absorbed when 8 kG of water is converted...
determine the amount of energy that will be absorbed when 8 kG of water is converted to steam at 100 C without change in temp Specific heat of water 4.18 Latant heat of vaporization 2257
a) calculate the temperature change for a 987 gram sample of water that absorbed 6,990 joules...
a) calculate the temperature change for a 987 gram sample of water that absorbed 6,990 joules of heat. is this endo- or exorthermic? b) how many grams of water when absorbing 12,000 calories will heat from 31.2 degrees c to 99.5 degrees c? c) 69.8 grams of aluminum is heated with 3,900 joules of energy. what will be the temperature change? what would the temperature be if the initial temperature was 25.0 degrees c? the c for aluminum is =...
which type of soil would you expect to have the most available water? Sand Silty clay...
which type of soil would you expect to have the most available water? Sand Silty clay Loam Clay If the temperature of a plant is 18C and the ambient temperature is 14C, which process will result in a net input of heat from the air to the plant ? Conduction Convection Evaporation None of the above
Calculate the final equilibrium temperature when 10.0 grams of steam initially at 100 degree C is...
Calculate the final equilibrium temperature when 10.0 grams of steam initially at 100 degree C is mixed with 450 grams of liquid water and 110 grams of ice at 0 degree C in a calorimeter. That is, the liquid water AND the ice are initially at 0 degree C. Ignore any heat energy exchanges with the calorimeter and the surroundings. If you conclude that the final temperature of the system is 0 degree C, then what mass of ice remains,...
Introduction of renewable energy 1) Draw a schematic diagram of a passivesolar water heater and write...
Introduction of renewable energy
1) Draw a schematic diagram of a passivesolar water heater and write in numbered steps how it works (2 marks) In what specific applications can solar water heater be used? (1 mark) Consider a solar water heater with a flat plate collector of area 6 m-positioned in a place where the solar irradiance is 800 W/m a) How much solar power reaches the collector? (1 mark) b) If the flat plate collector has 50% efficiency, how...
What mass of water (in kg) at 1000 degree C could be completely vaporized with 2.70E^3...
What mass of water (in kg) at 1000 degree C could be completely vaporized with 2.70E^3 cal of energy: 5.00E^-3 kg How many joules (J) of energy are released when 6.80 times 103g of steam at 100.0 degree C are completely frozen to ice at 0.0 degree C: 2.05E^7 J Convert the H_f value for water (80 cal/g) to units of J/mol: 6025 J/mol How much energy (in J) is required to completely melt 205.0 mol of ice at 0.0...
roints: hing: (LO2, 10 Marks) A solar water heating... (LO2, 10 Marks) A solar water heating...
roints: hing: (LO2, 10 Marks) A solar water heating... (LO2, 10 Marks) A solar water heating system is used to heat 5000 liters of water. The system uses 10 parabolic trough collectors each of 2m x 3m in size. The collector's efficiency is 85%, If the average solar irradiance is 610 W/m2, answer the questions. n Match Question Items Answer Items AA. What is the power received by the parabolic troughs in kW as an input? A. 37 B. -...
Must the amount of heat absorbed as 1 kg of saturated liquid water boils at 100...
Must the amount of heat absorbed as 1 kg of saturated liquid water boils at 100 °C, be equal to the amount of heat released as 1 kg of saturated water vapor condenses at 100 °C? Why? Which process requires more energy: completely vaporizing 1 kg of saturated liquid water at 1 atm pressure or completely vaporizing 1 kg of saturated liquid water at 8 atm pressure? Why? A food-scientist is cooking three identical beef stews in pans that are...
What mass of ice would it take to lower the temperature of 0.5kg of water 20°C...
What mass of ice would it take to lower the temperature of 0.5kg of water 20°C to 0°C. 7. from A 100-g piece of iron is heated to 100°C and then dropped into a cavity in a large block ofice at 0°C. How much mass of ice will melt? 8. 50 grams of hot water at 80°C is poured into a cavity in a very large block ofice at 0°C. The final temperature of the water in the cavity is...
Exactly 10.3 mL of water at 31.0 degree C are added to a hot iron skillet....
Exactly 10.3 mL of water at 31.0 degree C are added to a hot iron skillet. All of the water is converted into steam at 100 degree C. The mass of the pan is 1.15 kg and the molar heat capacity of iron is 25.19 J/(mol middot degree C). What is the temperature change of the skillet? The temperature of the skillet goes down, not up. Remember, the heat gained by the water is LOST by the skillet: Q_skillet =...
Calculate the final equilibrium temperature when 10.0 grams of steam initially at 100 degree C is mixed with 450 grams of liquid water and 110 grams of ice at 0 degree C in a calorimeter. That is, the liquid water AND the ice are initially at 0 degree C. Ignore any heat energy exchanges with the calorimeter and the surroundings. If you conclude that the final temperature of the system is 0 degree C, then what mass of ice remains,...
Introduction of renewable energy
1) Draw a schematic diagram of a passivesolar water heater and write in numbered steps how it works (2 marks) In what specific applications can solar water heater be used? (1 mark) Consider a solar water heater with a flat plate collector of area 6 m-positioned in a place where the solar irradiance is 800 W/m a) How much solar power reaches the collector? (1 mark) b) If the flat plate collector has 50% efficiency, how...
What mass of water (in kg) at 1000 degree C could be completely vaporized with 2.70E^3 cal of energy: 5.00E^-3 kg How many joules (J) of energy are released when 6.80 times 103g of steam at 100.0 degree C are completely frozen to ice at 0.0 degree C: 2.05E^7 J Convert the H_f value for water (80 cal/g) to units of J/mol: 6025 J/mol How much energy (in J) is required to completely melt 205.0 mol of ice at 0.0...
roints: hing: (LO2, 10 Marks) A solar water heating... (LO2, 10 Marks) A solar water heating system is used to heat 5000 liters of water. The system uses 10 parabolic trough collectors each of 2m x 3m in size. The collector's efficiency is 85%, If the average solar irradiance is 610 W/m2, answer the questions. n Match Question Items Answer Items AA. What is the power received by the parabolic troughs in kW as an input? A. 37 B. -...
Must the amount of heat absorbed as 1 kg of saturated liquid water boils at 100 °C, be equal to the amount of heat released as 1 kg of saturated water vapor condenses at 100 °C? Why? Which process requires more energy: completely vaporizing 1 kg of saturated liquid water at 1 atm pressure or completely vaporizing 1 kg of saturated liquid water at 8 atm pressure? Why? A food-scientist is cooking three identical beef stews in pans that are...
What mass of ice would it take to lower the temperature of 0.5kg of water 20°C to 0°C. 7. from A 100-g piece of iron is heated to 100°C and then dropped into a cavity in a large block ofice at 0°C. How much mass of ice will melt? 8. 50 grams of hot water at 80°C is poured into a cavity in a very large block ofice at 0°C. The final temperature of the water in the cavity is...
Exactly 10.3 mL of water at 31.0 degree C are added to a hot iron skillet. All of the water is converted into steam at 100 degree C. The mass of the pan is 1.15 kg and the molar heat capacity of iron is 25.19 J/(mol middot degree C). What is the temperature change of the skillet? The temperature of the skillet goes down, not up. Remember, the heat gained by the water is LOST by the skillet: Q_skillet =...
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