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> PROBLEM-SOLVING CLASS ACTIVITY 3 A 26.5 g piece of lead, heated to 90.0°C, is dropped...
9. A 48.8 g piece of an unknown metal was heated to 99.8°C, then dropped into...
9. A 48.8 g piece of an unknown metal was heated to 99.8°C, then dropped into a coffee cup calorimeter containing 40.0 g of water at 26.3°C The temperature of the water increased to 30.2°C. How much heat flowed into the water? What is the specific heat of the unknown metal?
A 229.0 g piece of lead is heated to 84.0oC and then dropped into a calorimeter...
A 229.0 g piece of lead is heated to 84.0oC and then dropped into a calorimeter containing 526.0 g of water that initally is at 15.0oC. Neglecting the heat capacity of the container, find the final equilibrium temperature (in oC) of the lead and water.
3. A75.0 g piece of copper metal is initially at 100°C. It is dropped into a...
3. A75.0 g piece of copper metal is initially at 100°C. It is dropped into a coffee cup calorimeter containing 75.0 g of water a a rature of 20.0°c. Assuming that the only heat exchange is between the copper metal and the water (no heat is given to the calorimeter), what is the final temperature of the water. Specific heat of copper 0.387 J/goC
A 239.0 g piece of lead is heated to 85.0oC and then dropped into a calorimeter...
A 239.0 g piece of lead is heated to 85.0oC and then dropped into a calorimeter containing 645.0 g of water that initally is at 24.0oC. Neglecting the heat capacity of the container, find the final equilibrium temperature (in oC) of the lead and water. A: 7.89 B: 1.05×101 C: 1.40×101 D: 1.86×101 E: 2.47×101 F: 3.28×101 G: 4.37×101 H: 5.81×10
PROBLEM-SOLVING CLASS ACTIVITY 9 Suppose 33 mL of 1.20 M HCI is added to 42 mL...
PROBLEM-SOLVING CLASS ACTIVITY 9 Suppose 33 mL of 1.20 M HCI is added to 42 mL of a solution containing excess sodium hydroxide, NaOH, in a coffee-cup calorimeter. The solution temperature, originally 25.0 °C, rises to 31.8 °C. Calculate the molar heat of neutralization. HCI(aq) NaOH(aq) NaCl(aq) H20() For simplicity, assume the heat capacity and density of the final solution in the cup are those of water (4.184 J/g °C and 1.00 g/mL, respectively). Also assume the total volume of...
1 A173.0g lead ball at 155°C is dropped into a calorimeter cup containing 210 g of...
1 A173.0g lead ball at 155°C is dropped into a calorimeter cup containing 210 g of water at 16.0°c. After equilibrium is reached, the temperature of water is increased to 18.2°C. What is the heat capacity of calorimeter? Assume that calorimeter and water are initially at the same temperature. (Specific heat of water is 4186 J/kg. C and specific heat of lead is 128 J/kg.C) 2. An unknown metal sample of 54 g at 108°C is dropped into a calorimeter...
(18) 7. A 28.4 g piece of metal of unknown composition is heated to 534.4 °C...
(18) 7. A 28.4 g piece of metal of unknown composition is heated to 534.4 °C and plunged into a styrofoam coffee cup containing 43.5 mL of water at 28.6 °C. Ten minutes later the system reaches thermal equilibrium at 38.4 °C. Assuming that no heat is lost to the cup or the surroundings. determine the specific heat capacity of the unknown metal
3. A 32.520 g piece of unknown metal was heated in a hot water bath at 99.80°C. The hot metal was then transferred...
3. A 32.520 g piece of unknown metal was heated in a hot water bath at 99.80°C. The hot metal was then transferred to a coffee-cup calorimeter containing 100.0 mL of water. Time-Temperature data was collected and plotted. From the plot, the initial and final tem- peratures for the water were determined to be T 23.76°C and T 26.18°C. and qse (Assume C 21.0 J°C.) a. Calculate cal b. Calculate qnetal Calculate cmetal d. Calculate the molar mass for the...
A piece of copper metal is initially at 83.0°C. It is dropped into a coffee cup...
A piece of copper metal is initially at 83.0°C. It is dropped into a coffee cup calorimeter containing 30.0 9 of water at a temperature of 10.0°c. After stirring, the final temperature of both copper and water is 25.0°c. Assuming no heat losses, and that the specific heat (capacity) of water is 4.18 J/(g.), what is the heat capacity of the copper in J/K?
200 g of an unknown metal is heated to 90.0 degrees C, then dropped into 50.0...
200 g of an unknown metal is heated to 90.0 degrees C, then dropped into 50.0 g of water at 20.0 degrees C in an insulated container. The water temperature rises within a few seconds to 27.7 degrees C, then changes no further. Identify the metal.
9. A 48.8 g piece of an unknown metal was heated to 99.8°C, then dropped into a coffee cup calorimeter containing 40.0 g of water at 26.3°C The temperature of the water increased to 30.2°C. How much heat flowed into the water? What is the specific heat of the unknown metal?
3. A75.0 g piece of copper metal is initially at 100°C. It is dropped into a coffee cup calorimeter containing 75.0 g of water a a rature of 20.0°c. Assuming that the only heat exchange is between the copper metal and the water (no heat is given to the calorimeter), what is the final temperature of the water. Specific heat of copper 0.387 J/goC
PROBLEM-SOLVING CLASS ACTIVITY 9 Suppose 33 mL of 1.20 M HCI is added to 42 mL of a solution containing excess sodium hydroxide, NaOH, in a coffee-cup calorimeter. The solution temperature, originally 25.0 °C, rises to 31.8 °C. Calculate the molar heat of neutralization. HCI(aq) NaOH(aq) NaCl(aq) H20() For simplicity, assume the heat capacity and density of the final solution in the cup are those of water (4.184 J/g °C and 1.00 g/mL, respectively). Also assume the total volume of...
1 A173.0g lead ball at 155°C is dropped into a calorimeter cup containing 210 g of water at 16.0°c. After equilibrium is reached, the temperature of water is increased to 18.2°C. What is the heat capacity of calorimeter? Assume that calorimeter and water are initially at the same temperature. (Specific heat of water is 4186 J/kg. C and specific heat of lead is 128 J/kg.C) 2. An unknown metal sample of 54 g at 108°C is dropped into a calorimeter...
(18) 7. A 28.4 g piece of metal of unknown composition is heated to 534.4 °C and plunged into a styrofoam coffee cup containing 43.5 mL of water at 28.6 °C. Ten minutes later the system reaches thermal equilibrium at 38.4 °C. Assuming that no heat is lost to the cup or the surroundings. determine the specific heat capacity of the unknown metal
3. A 32.520 g piece of unknown metal was heated in a hot water bath at 99.80°C. The hot metal was then transferred to a coffee-cup calorimeter containing 100.0 mL of water. Time-Temperature data was collected and plotted. From the plot, the initial and final tem- peratures for the water were determined to be T 23.76°C and T 26.18°C. and qse (Assume C 21.0 J°C.) a. Calculate cal b. Calculate qnetal Calculate cmetal d. Calculate the molar mass for the...
A piece of copper metal is initially at 83.0°C. It is dropped into a coffee cup calorimeter containing 30.0 9 of water at a temperature of 10.0°c. After stirring, the final temperature of both copper and water is 25.0°c. Assuming no heat losses, and that the specific heat (capacity) of water is 4.18 J/(g.), what is the heat capacity of the copper in J/K?
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