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1. Energy Units (6 points) 1) Calculate the amount of energy required to raise the temperature...
1. Energy Units (6 points) 1) Calculate the amount of energy required to raise the temperature...
1. Energy Units (6 points) 1) Calculate the amount of energy required to raise the temperature of 4 gallons of water from 50 degree F to the boiling point. A gallon of water weights 8.34 lb. Calculate the answer in three different energy units below. Show calculation. 1) BTU 2) calorie 3) Kwh 2) When heated by 300 BTUs, how many degrees (in F) will the temperature of 6 gallons of water increase? (3 points)
3. A solar greenhouse has three twenty-lb steel barrels as thermal storage. The volume of the...
3. A solar greenhouse has three twenty-lb steel barrels as thermal storage. The volume of the barrels is 55 gallons. The owner filled the first one barrel with 55 gallons of water, filled the second half full (27.5 gallons), and left the third empty. If the sun adds 500 BTUs of heat to each barrel, how much will each barrel warm up? A gallon of water weights 8.34 lb, and a gallon in volume is equal to 0.13368 cubic feet....
Question 9 (5 points) A Btu is defined as the amount of heat required to raise...
Question 9 (5 points) A Btu is defined as the amount of heat required to raise the temperature of what quantity of water by 1 degree Fahrenheit? 1) 1 gallon 2) 1 pound 3) 1 kilogram 4) 1 ounce Question 10 (5 points) Which of the following locations should have the highest R-value? 1) floor 2) walls 3) attic 4) doors Question 11 (5 points) A wall for a commercial building is 120 feet by 10 feet. The wall has...
Calculate the amount of heat (in kJ) required to raise the temperature of 14.0 g of...
Calculate the amount of heat (in kJ) required to raise the temperature of 14.0 g of liquid H_2O (molar mass = 18.0 g/mol) from 25.0 degree C to the boiling point and then to vaporize the liquid at that temperature, (specific heal capacities: H_2O(s): 2.06 J/g degree C, H_2O(l): 4.18 J/g degree C, H_2O(g): 1.92 J/g degree C; heat of fusion of H_2O: 6.02 kJ/mol; heat of vaporization of H_2O: 40.7 kJ/mol; melting point of H_2O: 0.0 degree C, boiling...
The amount of boiling water required to raise the temperature of 25.0 kg of water in...
The amount of boiling water required to raise the temperature of 25.0 kg of water in the bath to body temperature is 4.80 kg. In this process, the heat lost by the boiling water is equal to the heat gained by the room- temperature water. How much heat was transferred in this process? Express your answer to four significant figures and include the appropriate units.
One kilocalorie (kcal) is the amount of energy needed to raise 1 ________ of water by...
One kilocalorie (kcal) is the amount of energy needed to raise 1 ________ of water by one degree Celsius. Select one: a. tablespoon b. gallon c. liter d. milliliter e. cup
Calculate the amount of heat (in kJ) required to raise the temperature of 150.0mL of water...
Calculate the amount of heat (in kJ) required to raise the temperature of 150.0mL of water from 22˚C to 50˚C. The specific heat of water is 4.184 J/g*˚C. q=msΔ
A single-effect evaporator is used, which concentrates 15,000 kg/hr of 15% to 45% solids sodium hydroxide...
A single-effect evaporator is used, which concentrates 15,000 kg/hr of 15% to 45% solids sodium hydroxide solution at a temperature of 30 degree C. The steam flow has a manometric pressure of 160 kpa and the vacuum pressure is 80 mmhg, the overall coefficient of 1,000 W/m^2. Calculate the amount of water vapor required and the required heating surface. Enthalpy of solution at 15% and 30 degree CH = 50 Btu/lb, Boiling point of the solution at 45% T =...
ved One Calone is the amount of heat energy required to raise the temperature of 100...
ved One Calone is the amount of heat energy required to raise the temperature of 100 g of water by C. True or False False True
Water in a 35 gallon water heater cools to a temperature below 32 degrees F and freezes 1. Fully. Determine the volumetric change in gallons as a result of freezing. 2. The water above is then he...
Water in a 35 gallon water heater cools to a temperature below 32 degrees F and freezes 1. Fully. Determine the volumetric change in gallons as a result of freezing. 2. The water above is then heated to boiling point under standard atmospheric pressure. - determine the volumetric change in gallons
Water in a 35 gallon water heater cools to a temperature below 32 degrees F and freezes 1. Fully. Determine the volumetric change in gallons as a result of...
1. Energy Units (6 points) 1) Calculate the amount of energy required to raise the temperature of 4 gallons of water from 50 degree F to the boiling point. A gallon of water weights 8.34 lb. Calculate the answer in three different energy units below. Show calculation. 1) BTU 2) calorie 3) Kwh 2) When heated by 300 BTUs, how many degrees (in F) will the temperature of 6 gallons of water increase? (3 points)
3. A solar greenhouse has three twenty-lb steel barrels as thermal storage. The volume of the barrels is 55 gallons. The owner filled the first one barrel with 55 gallons of water, filled the second half full (27.5 gallons), and left the third empty. If the sun adds 500 BTUs of heat to each barrel, how much will each barrel warm up? A gallon of water weights 8.34 lb, and a gallon in volume is equal to 0.13368 cubic feet....
Question 9 (5 points) A Btu is defined as the amount of heat required to raise the temperature of what quantity of water by 1 degree Fahrenheit? 1) 1 gallon 2) 1 pound 3) 1 kilogram 4) 1 ounce Question 10 (5 points) Which of the following locations should have the highest R-value? 1) floor 2) walls 3) attic 4) doors Question 11 (5 points) A wall for a commercial building is 120 feet by 10 feet. The wall has...
Calculate the amount of heat (in kJ) required to raise the temperature of 14.0 g of liquid H_2O (molar mass = 18.0 g/mol) from 25.0 degree C to the boiling point and then to vaporize the liquid at that temperature, (specific heal capacities: H_2O(s): 2.06 J/g degree C, H_2O(l): 4.18 J/g degree C, H_2O(g): 1.92 J/g degree C; heat of fusion of H_2O: 6.02 kJ/mol; heat of vaporization of H_2O: 40.7 kJ/mol; melting point of H_2O: 0.0 degree C, boiling...
The amount of boiling water required to raise the temperature of 25.0 kg of water in the bath to body temperature is 4.80 kg. In this process, the heat lost by the boiling water is equal to the heat gained by the room- temperature water. How much heat was transferred in this process? Express your answer to four significant figures and include the appropriate units.
A single-effect evaporator is used, which concentrates 15,000 kg/hr of 15% to 45% solids sodium hydroxide solution at a temperature of 30 degree C. The steam flow has a manometric pressure of 160 kpa and the vacuum pressure is 80 mmhg, the overall coefficient of 1,000 W/m^2. Calculate the amount of water vapor required and the required heating surface. Enthalpy of solution at 15% and 30 degree CH = 50 Btu/lb, Boiling point of the solution at 45% T =...
ved One Calone is the amount of heat energy required to raise the temperature of 100 g of water by C. True or False False True
Water in a 35 gallon water heater cools to a temperature below 32 degrees F and freezes 1. Fully. Determine the volumetric change in gallons as a result of freezing. 2. The water above is then heated to boiling point under standard atmospheric pressure. - determine the volumetric change in gallons
Water in a 35 gallon water heater cools to a temperature below 32 degrees F and freezes 1. Fully. Determine the volumetric change in gallons as a result of...
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