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8. How much heat is needed to raise the temperature of 100 copper pennies weighing 3.012...
please help and show detailed work! [2 point] Copper pennies weighing 2.5 g each have been...
please help and show detailed work!
[2 point] Copper pennies weighing 2.5 g each have been placed in boiling water at 100°C. An insulated cup holds 100 g of water at 25°C. How many pennies must be added to the water to raise the temperature to 31°C?
1. How much heat is needed to raise the temperature of 3 kg of water from...
1. How much heat is needed to raise the temperature of 3 kg of water from 20oC to 40oC? Give answer in kJ (1kJ = 1000 J) (round answer to 3 sig fig) 2. How much heat is needed to raise the temperature of 3 kg of ice from -40oC to -20oC? (round answer to 3 sig fig) Specific heat of water: C = 4180 J/kgK Specific heat of ice: C = 2090 J/kgK Specific heat of ethanol: C= 2440...
1. How much heat is needed to raise the temperature of 1.50 g of aluminum metal...
1. How much heat is needed to raise the temperature of 1.50 g of aluminum metal from 23.2 °C to 30.5 °C? (Specific heat capacity of aluminum is 0.90 J/g-K). 2. Given the following thermochemical equation: 2Ba(s) +0,() - 2B20(8) DH=-1107 kJ How many kJ of heat are released when 15.75 g of Ba(3) reacts completely with oxygen to form BaO(s)?
a. How much heat (kJ), at 1 atm, is required to raise the temperature of 25.0...
a. How much heat (kJ), at 1 atm, is required to raise the temperature of 25.0 g of liquid ethanol from -5.0°C to its boiling temperature and then vaporize all of it? Cs, liquid= 2.46J/g°C AHvap=38.6 kJ/mol b. How much heat (kJ), at 1 atm, is required to raise the temperature of 25.0 g water from 5.0°C to its boiling temperature and then vaporize all of it? Cs, liquid=4.184 /g°C AHvap=40.7 kJ/mol
Determine the mass of a pierce of copper where the heat needed to raise the temperature...
Determine the mass of a pierce of copper where the heat needed to raise the temperature of the copper from 0°C to 110 °C was 293,000 J . The specific heat capacity of copper is 376 J per kilogram per degree Celsius. Answer in whole numbers and one decimal place in kg.
Part 2 (0.3 point) How much chalcopyrite had to be mined to produce 100 pennies if...
Part 2 (0.3 point) How much chalcopyrite had to be mined to produce 100 pennies if reaction 1 had a percent yield of 65.00 % and all other reaction steps had yield of 100%? g CuFeS2 Part 3 (0.3 point) How much chalcopyrite had be mined to produce 100 pennies if each reaction involving copper proceeded in 65.00 % yield? g CuFeS2 See page 302 19 Question (1 point) "Native" or elemental copper can be found in nature, but most...
How much heat do you need if you want to raise the temperature of 31.0g of...
How much heat do you need if you want to raise the temperature of 31.0g of copper from 10.0 degree celsius to 60.0 degree celsius? (The specific heat of copper is 0.385 J/g degree celsius).
How much time (in seconds) is needed for a surgical cauterizer to raise the temperature of...
How much time (in seconds) is needed for a surgical cauterizer to raise the temperature of 3.00 g of tissue from 37.0 degrees C to 100 degrees C ad then boil away 0.200 g of water, if it puts out 3.50 mA at 20.0 kV? Ignore heat transfer to the surroundings. (Assume the specific heat of tissue is 3,500 J/(kg*degreeC) and the latnet heat of vaporization of water is 2,256 kJ/kg.)
How much heat is needed to raise the temperature of 101 g of water from 23.0...
How much heat is needed to raise the temperature of 101 g of water from 23.0 °C to 92.0 °C?
Trial 1 29.60 g Cu 95.9 25.9 23.09 g 21.7 Mass of Pennies Used Initial Temperature...
Trial 1 29.60 g Cu 95.9 25.9 23.09 g 21.7 Mass of Pennies Used Initial Temperature of Pennies Final Temperature of the System Mass of Water in Calorimeter Initial Temperature of Water in Calorimeter Specific Heat of Water q Gained by Water Specific Heat of Copper (Assuming No Heat Lost to 4.184 J/g'C Calorimeter.) Average q U) Absorbed by 127.4J Calorimeter from Part B. Specific Heat of Copper (Using the data from Part B) If the specific heat of Cu...
please help and show detailed work!
[2 point] Copper pennies weighing 2.5 g each have been placed in boiling water at 100°C. An insulated cup holds 100 g of water at 25°C. How many pennies must be added to the water to raise the temperature to 31°C?
1. How much heat is needed to raise the temperature of 1.50 g of aluminum metal from 23.2 °C to 30.5 °C? (Specific heat capacity of aluminum is 0.90 J/g-K). 2. Given the following thermochemical equation: 2Ba(s) +0,() - 2B20(8) DH=-1107 kJ How many kJ of heat are released when 15.75 g of Ba(3) reacts completely with oxygen to form BaO(s)?
a. How much heat (kJ), at 1 atm, is required to raise the temperature of 25.0 g of liquid ethanol from -5.0°C to its boiling temperature and then vaporize all of it? Cs, liquid= 2.46J/g°C AHvap=38.6 kJ/mol b. How much heat (kJ), at 1 atm, is required to raise the temperature of 25.0 g water from 5.0°C to its boiling temperature and then vaporize all of it? Cs, liquid=4.184 /g°C AHvap=40.7 kJ/mol
Part 2 (0.3 point) How much chalcopyrite had to be mined to produce 100 pennies if reaction 1 had a percent yield of 65.00 % and all other reaction steps had yield of 100%? g CuFeS2 Part 3 (0.3 point) How much chalcopyrite had be mined to produce 100 pennies if each reaction involving copper proceeded in 65.00 % yield? g CuFeS2 See page 302 19 Question (1 point) "Native" or elemental copper can be found in nature, but most...
Trial 1 29.60 g Cu 95.9 25.9 23.09 g 21.7 Mass of Pennies Used Initial Temperature of Pennies Final Temperature of the System Mass of Water in Calorimeter Initial Temperature of Water in Calorimeter Specific Heat of Water q Gained by Water Specific Heat of Copper (Assuming No Heat Lost to 4.184 J/g'C Calorimeter.) Average q U) Absorbed by 127.4J Calorimeter from Part B. Specific Heat of Copper (Using the data from Part B) If the specific heat of Cu...
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