Homework Answers
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Can I get help with 6 and 7 please!!! 1 as well if it's possible please....
Can I get help with 6 and 7 please!!!
1 as well if it's possible please.
- ZOOM + 1. A 20.0-gram piece of aluminum at 0.0°C is dropped into a calorimeter containing some hot water. The temperature of the water drops from 90.0°C to 75.0°C. What is the mass of water in the calorimeter? 2. When 13.0 grams of solid NaOH dissolves in 400.0 grams of water in a coffee-cup calorimeter, the temperature of the water rises from 22.2°C...
1. A 20.0-8 piece of aluminum at 0.0°C is dropped into a beaker containing 100.0 g...
1. A 20.0-8 piece of aluminum at 0.0°C is dropped into a beaker containing 100.0 g of water. The temperature of the water drops from 90.0°C to 85.7°C. What quantity of energy did the aluminum absorb? What is the specific heat of the aluminum? 2. If 55.0 ml of water at 22.5°C is mixed with 100.0 ml of water at 95.2 'C, what would you expect for a final temperature? 3. Cold packs (the kind that get cold when you...
only worth 1 point. 1. (6) 15.0 g of ice cubes at 0.0°C are combined with...
only worth 1 point. 1. (6) 15.0 g of ice cubes at 0.0°C are combined with 150.g of liquid water at 70.0°C in a coffee cup calorimeter. Calculate the final temperature reached, assuming no heat loss or gain from the calorimeter. (Data: specific heat capacity of H2O(l). C4.18 1/8 'C) H2O(s) → H2O(1) AH = 6.02 kJ/mol) 2. (6) Calculate A s for the reaction: 5C(s) + 6H2(g) → CsHuz10 Use the following reactions and given AH's. CsHua(l) + 802()...
A 20.0g piece of metal with a specific heat L Thermochemistry 1. Calculate the total change...
A 20.0g piece of metal with a specific heat
L Thermochemistry 1. Calculate the total change in internal energy. AE of a system when 400 J heat is oplies to expanding O2(g) and the gas does 350 J of work on its surroundings. 2. Calculate the kinetic energy in .colories, and 6.00x10 m/s. of a portice (moss 9.11x109) 3. Calculate AH in kJ for reaction. CO CO given the following thermochemical data: 2CO(g) + 020) ► 2C0z9) AHP:. 566.1 kJ...
18. In a calorimetry experiment, 0.1277 g af Me ribbon was added to 200.0 mL 0. HCl at 24.12 °C. The water temperat...
18. In a calorimetry experiment, 0.1277 g af Me ribbon was added to 200.0 mL 0. HCl at 24.12 °C. The water temperature increased to 27.10 °C. Calculate AH for reaction, as performed, and AH per mole of HCI. 19. A 2.50 g sample of sucrose (C2H220) was burned in excess oxygen in a car which contained 2.19 kg of water. The temperature of the water increased from 20. to 25.01 °C. Determine the molar heat of combustion of sucrose....
need help on 5 and 6 0 2.00 g of octane, C8H18 was burned in a...
need help on 5 and 6
0 2.00 g of octane, C8H18 was burned in a bomb calorimeter causing the temperature to increase from 21.0°C to 35.5°C. The total heat capacity of the calorimeter was 0.05 KJP C. Calculate the heat of combustion for the reaction shown below. 2 C8H18(1) + 2502(g) → 16 CO2(g) + 18 H2O(g) 6. When 50.0 mL of 0.100 M AgNO3 was reacted with 50.0 mL of 0.100 M HCl in a . Styrofoam cup...
1. 2. A bomb calorimeter, or constant volume calorimeter, is a device often used to determine...
1.
2.
A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter. In the laboratory a student burns a 0.425-g sample of diphenylacetylene (C14H10) in a bomb calorimeter containing 1170. g of water. The temperature increases from...
Measuring Heat of Reaction Problems 5. A sample of ethanol (C2H5OH), weighing 6.83 g underwent combustion...
Measuring Heat of Reaction Problems 5. A sample of ethanol (C2H5OH), weighing 6.83 g underwent combustion in a bomb calorimeter by the following reaction: 02 (g) 2 CO2 (g)3 H2O () C2H5OH ()3 If the heat capacity of the calorimeter and contents was 18.1 kJ/°C and the temperature of the calorimeter rose from 25.50 to 36.73, (1) what is the AH of the reaction? Using the definitions at the beginning of the module describe (2) the calorimeter + contents, (3)...
Please help with these two questions :( 1. How much energy (in kJ) is evolved during...
Please help with these two questions :(
1. How much energy (in kJ) is evolved during the reaction of
76.9 g of Al, according to the reaction below?
Fe2O3(s) + 2 Al(s) →
Al2O3(s) + 2 Fe(s) ΔH°rxn = -852
kJ
Assume that there is excess Fe2O3.
2. A 12.43 g sample of ethanol (C2H5OH) is
burned in a bomb calorimeter with a heat capacity, C = 5.65
kJ/°C.
C2H5OH(l) + 3 O2(g) → 2
CO2(g) + 3 H2O(g) ΔH°rxn...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following questions 1. A reaction in which heat is absorbed is called a. Endothermic b. Exothermic c. Cooling d. Heating 2. A reaction where heat is released is called a. Endothermic b. Exothermic c. Cooling d. Heating 3. The energy change of a reaction that occurs at constant pressure is called the a. Total energy change b. Work c. Heat of reaction d pressure 4....
Can I get help with 6 and 7 please!!!
1 as well if it's possible please.
- ZOOM + 1. A 20.0-gram piece of aluminum at 0.0°C is dropped into a calorimeter containing some hot water. The temperature of the water drops from 90.0°C to 75.0°C. What is the mass of water in the calorimeter? 2. When 13.0 grams of solid NaOH dissolves in 400.0 grams of water in a coffee-cup calorimeter, the temperature of the water rises from 22.2°C...
1. A 20.0-8 piece of aluminum at 0.0°C is dropped into a beaker containing 100.0 g of water. The temperature of the water drops from 90.0°C to 85.7°C. What quantity of energy did the aluminum absorb? What is the specific heat of the aluminum? 2. If 55.0 ml of water at 22.5°C is mixed with 100.0 ml of water at 95.2 'C, what would you expect for a final temperature? 3. Cold packs (the kind that get cold when you...
only worth 1 point. 1. (6) 15.0 g of ice cubes at 0.0°C are combined with 150.g of liquid water at 70.0°C in a coffee cup calorimeter. Calculate the final temperature reached, assuming no heat loss or gain from the calorimeter. (Data: specific heat capacity of H2O(l). C4.18 1/8 'C) H2O(s) → H2O(1) AH = 6.02 kJ/mol) 2. (6) Calculate A s for the reaction: 5C(s) + 6H2(g) → CsHuz10 Use the following reactions and given AH's. CsHua(l) + 802()...
A 20.0g piece of metal with a specific heat
L Thermochemistry 1. Calculate the total change in internal energy. AE of a system when 400 J heat is oplies to expanding O2(g) and the gas does 350 J of work on its surroundings. 2. Calculate the kinetic energy in .colories, and 6.00x10 m/s. of a portice (moss 9.11x109) 3. Calculate AH in kJ for reaction. CO CO given the following thermochemical data: 2CO(g) + 020) ► 2C0z9) AHP:. 566.1 kJ...
18. In a calorimetry experiment, 0.1277 g af Me ribbon was added to 200.0 mL 0. HCl at 24.12 °C. The water temperature increased to 27.10 °C. Calculate AH for reaction, as performed, and AH per mole of HCI. 19. A 2.50 g sample of sucrose (C2H220) was burned in excess oxygen in a car which contained 2.19 kg of water. The temperature of the water increased from 20. to 25.01 °C. Determine the molar heat of combustion of sucrose....
need help on 5 and 6
0 2.00 g of octane, C8H18 was burned in a bomb calorimeter causing the temperature to increase from 21.0°C to 35.5°C. The total heat capacity of the calorimeter was 0.05 KJP C. Calculate the heat of combustion for the reaction shown below. 2 C8H18(1) + 2502(g) → 16 CO2(g) + 18 H2O(g) 6. When 50.0 mL of 0.100 M AgNO3 was reacted with 50.0 mL of 0.100 M HCl in a . Styrofoam cup...
1.
2.
A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter. In the laboratory a student burns a 0.425-g sample of diphenylacetylene (C14H10) in a bomb calorimeter containing 1170. g of water. The temperature increases from...
Measuring Heat of Reaction Problems 5. A sample of ethanol (C2H5OH), weighing 6.83 g underwent combustion in a bomb calorimeter by the following reaction: 02 (g) 2 CO2 (g)3 H2O () C2H5OH ()3 If the heat capacity of the calorimeter and contents was 18.1 kJ/°C and the temperature of the calorimeter rose from 25.50 to 36.73, (1) what is the AH of the reaction? Using the definitions at the beginning of the module describe (2) the calorimeter + contents, (3)...
Please help with these two questions :(
1. How much energy (in kJ) is evolved during the reaction of
76.9 g of Al, according to the reaction below?
Fe2O3(s) + 2 Al(s) →
Al2O3(s) + 2 Fe(s) ΔH°rxn = -852
kJ
Assume that there is excess Fe2O3.
2. A 12.43 g sample of ethanol (C2H5OH) is
burned in a bomb calorimeter with a heat capacity, C = 5.65
kJ/°C.
C2H5OH(l) + 3 O2(g) → 2
CO2(g) + 3 H2O(g) ΔH°rxn...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following questions 1. A reaction in which heat is absorbed is called a. Endothermic b. Exothermic c. Cooling d. Heating 2. A reaction where heat is released is called a. Endothermic b. Exothermic c. Cooling d. Heating 3. The energy change of a reaction that occurs at constant pressure is called the a. Total energy change b. Work c. Heat of reaction d pressure 4....
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