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PRACTICEC Calorimetry 1. What is the final temperature when a 3.0 kg gold bar at 99°C...
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,...
Determine the final temperature of the liquid when you mix: m1 = 1.00 kg water at...
Determine the final temperature of the liquid when you
mix:
m1 = 1.00 kg water at t1 = 10.0 °C
and
m2 = 2.00 kg water at t2 = 40.0 °C.
Assume that no heat is lost to the environment.
A numerical value is required for credit.
SHOW YOUR WORK.
Formulas: Heat: Q = mcAT Q1 + Q2 + ...=0 Calorimetry:
Question 17 3 pts A 771.0-kg copper bar is put into a smelter for melting. The...
Question 17 3 pts A 771.0-kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar? The specific heat for copper is 386 J/kg · K, the heat of fusion for copper is 205,000 J/kg, and its melting point is 1357 K. O 3.15 x 1011kg 4.73 x 105 kJ 3.15 x 108 kJ 5.62× 105 kJ Question 18...
Exercise #6: Enthalpy Problems Calorimetry Problems: AH = m(at)c, 500 kg of water cools from 95°C...
Exercise #6: Enthalpy Problems Calorimetry Problems: AH = m(at)c, 500 kg of water cools from 95°C to 20°C. How much heat energy was released by the water? C, of H2O(l) is 4.180 J/gºC. 2. How much heat energy is required to heat 45 g of sheet Fe from 24°C to 200°C? C of Fe(s) is 0.449 J/gºC. 3. A food chemist combusts 56 g of a chocolate bar in a calorimeter containing 1.5 L of water (density H,0 = 1g/ImL)....
1. (10 p) Determine the final temperature of the liquid when you mix: m = 1.00...
1. (10 p) Determine the final temperature of the liquid when you mix: m = 1.00 kg water at t1 = 10.0 °C and m2 = 2.00 kg water at t2 = 40.0 °C. Assume that no heat is lost to the environment. A numerical value is required for credit. SHOW YOUR WORK. Formulas: Heat: Q = = mcAT Calorimetry: Q1 + Q2 + ... = 0
A freshly-forged iron horseshoe, with a mass of 0.479 kg is dropped into a 0.200 kg iron pot whic...
A freshly-forged iron horseshoe, with a mass of 0.479 kg is
dropped into a 0.200 kg iron pot which contains 1.39 kg of water at
21.8 oC.
Use the data in the following table to answer the questions below: Specific Heat Capacity Melting Temperature Latent Heat of Fusion Material Aluminium Glass Gold Iron Platinumm Liquid Water Water Ice (J.kg K) 870 840 129 450 126 4180 2110 933 1773 1337 1811 2041 273 273 (kJ.kg) 321 N/A 67.0 209 113...
In this virtual lab, you will use coffee cup calorimetry to determine the specfic heat, c,...
In this virtual lab, you will use coffee cup calorimetry to determine the specfic heat, c, of a metal Heating the metal Imagine that, in lab, you record the mass of a piece of metal, Mmetal, as 3 mnctal 45.00 g In the next step of the lab (as shown in the animation to the left) you heat up the piece of metal. Play the animation, and record the metal's highest temperature, Tmeta Number metal84 o C OHot Plate Reset...
Not edited Temperature Change and Heat Capacity - Calorimetry- Three substances PLEASE ANSWER ALL PARTS OF THE QUESTION:...
Not edited Temperature Change and Heat Capacity -
Calorimetry- Three substances
PLEASE ANSWER ALL PARTS OF THE QUESTION:
CASE 1,2 and 3
water copper silver cup Case 1: A 0.780-kg silver pellet with a temperature of 85 °C is added to 0.150 kg of water in a copper cup of unknown mass. The initial temperature of the water and the copper cup is 14 °C. The equilibrium temperature of the system (silver+Water+copper cup) is measured to be 27.0 °C. Assume...
(20%) Problem 2: A piece of unknown material has a mass of m, = 0.79 kg and an initial temperature of Tu = 79°C. The s...
(20%) Problem 2: A piece of unknown material has a mass of m, = 0.79 kg and an initial temperature of Tu = 79°C. The specific heat of water is cw = 4.180 x 102 J/(kg:°C). 50% Part (a) The sample of material is dropped into my = 1.4 kg of water at T = 19°C in a calorimeter. The calorimeter reaches a final temperature of Te = 34°C. Enter an expression for the specific heat of the unknown material,...
1) A 1.00 kg block of gold at a 22.0 °C absorbs heat until it reaches...
1) A 1.00 kg block of gold at a 22.0 °C absorbs heat until it reaches a temperature of "C. How much heat (in kJ and kcal) did the gold block absorb? Cs (Au) = 0.129 g 2) Suppose a penny is found on the street and it has a temperature of -8.0°C. You pick up the penny and put it in your pocket, where it obtains a temperature of 90.0 °F. The penny has a mass of 3.15 g...
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,...
Determine the final temperature of the liquid when you
mix:
m1 = 1.00 kg water at t1 = 10.0 °C
and
m2 = 2.00 kg water at t2 = 40.0 °C.
Assume that no heat is lost to the environment.
A numerical value is required for credit.
SHOW YOUR WORK.
Formulas: Heat: Q = mcAT Q1 + Q2 + ...=0 Calorimetry:
Question 17 3 pts A 771.0-kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar? The specific heat for copper is 386 J/kg · K, the heat of fusion for copper is 205,000 J/kg, and its melting point is 1357 K. O 3.15 x 1011kg 4.73 x 105 kJ 3.15 x 108 kJ 5.62× 105 kJ Question 18...
Exercise #6: Enthalpy Problems Calorimetry Problems: AH = m(at)c, 500 kg of water cools from 95°C to 20°C. How much heat energy was released by the water? C, of H2O(l) is 4.180 J/gºC. 2. How much heat energy is required to heat 45 g of sheet Fe from 24°C to 200°C? C of Fe(s) is 0.449 J/gºC. 3. A food chemist combusts 56 g of a chocolate bar in a calorimeter containing 1.5 L of water (density H,0 = 1g/ImL)....
1. (10 p) Determine the final temperature of the liquid when you mix: m = 1.00 kg water at t1 = 10.0 °C and m2 = 2.00 kg water at t2 = 40.0 °C. Assume that no heat is lost to the environment. A numerical value is required for credit. SHOW YOUR WORK. Formulas: Heat: Q = = mcAT Calorimetry: Q1 + Q2 + ... = 0
A freshly-forged iron horseshoe, with a mass of 0.479 kg is
dropped into a 0.200 kg iron pot which contains 1.39 kg of water at
21.8 oC.
Use the data in the following table to answer the questions below: Specific Heat Capacity Melting Temperature Latent Heat of Fusion Material Aluminium Glass Gold Iron Platinumm Liquid Water Water Ice (J.kg K) 870 840 129 450 126 4180 2110 933 1773 1337 1811 2041 273 273 (kJ.kg) 321 N/A 67.0 209 113...
In this virtual lab, you will use coffee cup calorimetry to determine the specfic heat, c, of a metal Heating the metal Imagine that, in lab, you record the mass of a piece of metal, Mmetal, as 3 mnctal 45.00 g In the next step of the lab (as shown in the animation to the left) you heat up the piece of metal. Play the animation, and record the metal's highest temperature, Tmeta Number metal84 o C OHot Plate Reset...
Not edited Temperature Change and Heat Capacity -
Calorimetry- Three substances
PLEASE ANSWER ALL PARTS OF THE QUESTION:
CASE 1,2 and 3
water copper silver cup Case 1: A 0.780-kg silver pellet with a temperature of 85 °C is added to 0.150 kg of water in a copper cup of unknown mass. The initial temperature of the water and the copper cup is 14 °C. The equilibrium temperature of the system (silver+Water+copper cup) is measured to be 27.0 °C. Assume...
(20%) Problem 2: A piece of unknown material has a mass of m, = 0.79 kg and an initial temperature of Tu = 79°C. The specific heat of water is cw = 4.180 x 102 J/(kg:°C). 50% Part (a) The sample of material is dropped into my = 1.4 kg of water at T = 19°C in a calorimeter. The calorimeter reaches a final temperature of Te = 34°C. Enter an expression for the specific heat of the unknown material,...
1) A 1.00 kg block of gold at a 22.0 °C absorbs heat until it reaches a temperature of "C. How much heat (in kJ and kcal) did the gold block absorb? Cs (Au) = 0.129 g 2) Suppose a penny is found on the street and it has a temperature of -8.0°C. You pick up the penny and put it in your pocket, where it obtains a temperature of 90.0 °F. The penny has a mass of 3.15 g...
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