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
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...
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...
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...
Calculate the amount of heat necessary to raise the temperature of 135.0g of water from 50.4 degrees F to 85 degrees F. The specific heat of water is=4.184J/g.degrees C.
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
It takes 100,000 calories to raise 1 kilogram of water by 100 degree C. How many calories does it take to raise the temperature of an equal volume of lead by 100 degree C? And how many calories to raise an equal weight of lead by 100 degree C? Explain the difference between a calorie and a Calorie. What units are used to describe the heat (or energy)value of food? A ten foot pole is jammed under a 200 pound...
13,16,19
1. Which unit of measure represents the greater change amount of temperature change: Fahremheit or Celsius EXPLAIN YOUR ANSWER in a few words. 14 A) Convert 42 degC to degF. B) At what temperature, if any, do the Fahremheit and Celsius scales read the same number? 15. 180 dęgF to Kelvin degrees 80'F-32)xA+213.15:355.372K 16. Given a temperature of so degC, what would be the new temperature in degC if the temperature of the material were to triple? 17. How...
A closed container contains 1 lb of Refrigerant 22 at temperature 100°F and pressure of 65 lbf/in. The refrigerant is heated up until it reaches the temperature of 120°F. 1) Determine the pressure [lbf/in2] in the final state. (100 points) 2) Show the process schematically in a T-v and a p-v diagram with all the necessary features. (50 points) 3) Calculate the heat transfer [Btu] during the process. (150 points) 4 ) Calculate the work [Btu] if the refrigerant at...