Name: Physics Date: Download PDF Make A Copy Calculating the Specific Heats of Two Metals Directions: In this experiment, you will calculate the specific heats of two different objects. Materials scale ⚫two 100-ml glass beakers a 50 ml graduated cylinder ⚫tongs two Celsius-scale thermometers (meat-cooking type) seven post-1982 pennies ⚫a small, tight ball of aluminum foil • water You will work through the same procedure twice, once using pennies to warm up a beaker of water, and the second time using a hot ball of aluminum foil. Work down the left side of the following procedure and data section first. Then work down the right side, doing the procedure over again with the aluminum foil ball. Do not try to do it at the same time! Procedure and Data Procedure and Data for the Pennies Use the scale to find the mass of the pennies and record it Mass of pennies Pour 25 ml of water into a beaker. Knowing the density of water is 1 g/ml, what is the mass of water in the beaker?.. Mass of water Set a thermometer in the beaker of water and record the temperature.bere. Tof water Procedure and Data for the Foll Ball Use the scale to find the mass of the foil ball and record it. Before you begin, be sure to make the aluminum ball tight enough so that it will sink in the beaker of water. Mass of foil ball Pour 50 ml of water into a beaker. Knowing the density of water is 1 g/ml, what is the mass of water in the beaker?.. Mass of water Set a thermometer in the beaker of water and record the temperature here. Tof water Copyright 2017 Lincoln Leaming Solutions. All rights reserved. Name Physics Calculating the Specific Heats of Two Metals Date: Directions: In this experiment, you will calculate the specific heats of two different objects. In the other beaker, add any amount of hot tap water (you do not need to measure this amount). Let your faucet run for a minute or two to get the hottest water that you can. Add the pennies, wait about 15 seconds (to let the pennies come to the same temperature as the water), and record the temperature of the water. This temperature will also be the initial temperature of the pennies. of pennies Use tongs to move the hot pennies from the beaker of hot water into the room- temperature beaker. Wait several minutes, watching the thermometer, and record the highest temperature reached. Highest temp. of water with pennies in it = T In the other beaker, add any amount of hot tap water (you do not need to measure this amount). Let your faucet run for a minute or two to get the hottest water that you can. Add the foil ball. Wait about 15 seconds (to let the foil come to the same temperature as the water), and record the temperature of the water. This temperature will also be the initial temperature of the aluminum. Tof aluminum Use tongs to move the hot aluminum foll ball from the beaker of hot water into the room-temperature beaker. Wait several minutes, watching the thermometer, and record the highest temperature reached. Highest temp. of water with alum. in it = Calculations Complete the calculations for the penny and the aluminum ball below. Again, work on the two sides separately. Calculations with the Pennies Calculate the heat gained by the water (Q) using the specific heat of water (4,186 J/ kg), the mass of the water, and its change in temperature. Show your work: AQ= Calculations with the Aluminum Foil Ball Calculate the heat gained by the water (Q) using the specific heat of water (4,186 J/kg C), the mass of the water, and its change in temperature. Show your work AQ How much heat is lost by the pennies? AQ= Copyright 2017 © Lincoln Leaming Solutions. All rights reserved. Name: Physics How much heat is lost by the aluminum? AQ= Date: Calculating the Specific Heats of Two Metals Directions: In this experiment, you will calculate the specific heats of two different objects. Calculate the specific heat of the pennies, the mass of the pennies, and the temperature change of the pennies. Show all of your work here Calculate the specific heat of aluminum, the mass of the aluminum, and the temperature change of the aluminum. Show all of your work here:!" Analysis Analysis for the Pennies Pennies that are made after 1982 are 98% zinc. Calculate your percent error using the proper specific heat value for zinc of 390 J/ kg Co. Show your work! Analysis for Aluminum Foll Aluminum foil is usually at least 98% aluminum. Calculate your percent error using the proper specific heat value for aluminum of 900 J/kg C. Show your work! Were your answers close to the accepted values? Name at least two sources of error. (Remember, incorrect math is not an experimental source of error!) Copyright 2017 Lincoln Leaming Solutions. All rights reserved.

Name: Physics Date: Download PDF Make A Copy Calculating the Specific Heats of Two Metals Directions: In this experiment, you will calculate the specific heats of two different objects. Materials scale ⚫two 100-ml glass beakers a 50 ml graduated cylinder ⚫tongs two Celsius-scale thermometers (meat-cooking type) seven post-1982 pennies ⚫a small, tight ball of aluminum foil • water You will work through the same procedure twice, once using pennies to warm up a beaker of water, and the second time using a hot ball of aluminum foil. Work down the left side of the following procedure and data section first. Then work down the right side, doing the procedure over again with the aluminum foil ball. Do not try to do it at the same time! Procedure and Data Procedure and Data for the Pennies Use the scale to find the mass of the pennies and record it Mass of pennies Pour 25 ml of water into a beaker. Knowing the density of water is 1 g/ml, what is the mass of water in the beaker?.. Mass of water Set a thermometer in the beaker of water and record the temperature.bere. Tof water Procedure and Data for the Foll Ball Use the scale to find the mass of the foil ball and record it. Before you begin, be sure to make the aluminum ball tight enough so that it will sink in the beaker of water. Mass of foil ball Pour 50 ml of water into a beaker. Knowing the density of water is 1 g/ml, what is the mass of water in the beaker?.. Mass of water Set a thermometer in the beaker of water and record the temperature here. Tof water Copyright 2017 Lincoln Leaming Solutions. All rights reserved. Name Physics Calculating the Specific Heats of Two Metals Date: Directions: In this experiment, you will calculate the specific heats of two different objects. In the other beaker, add any amount of hot tap water (you do not need to measure this amount). Let your faucet run for a minute or two to get the hottest water that you can. Add the pennies, wait about 15 seconds (to let the pennies come to the same temperature as the water), and record the temperature of the water. This temperature will also be the initial temperature of the pennies. of pennies Use tongs to move the hot pennies from the beaker of hot water into the room- temperature beaker. Wait several minutes, watching the thermometer, and record the highest temperature reached. Highest temp. of water with pennies in it = T In the other beaker, add any amount of hot tap water (you do not need to measure this amount). Let your faucet run for a minute or two to get the hottest water that you can. Add the foil ball. Wait about 15 seconds (to let the foil come to the same temperature as the water), and record the temperature of the water. This temperature will also be the initial temperature of the aluminum. Tof aluminum Use tongs to move the hot aluminum foll ball from the beaker of hot water into the room-temperature beaker. Wait several minutes, watching the thermometer, and record the highest temperature reached. Highest temp. of water with alum. in it = Calculations Complete the calculations for the penny and the aluminum ball below. Again, work on the two sides separately. Calculations with the Pennies Calculate the heat gained by the water (Q) using the specific heat of water (4,186 J/ kg), the mass of the water, and its change in temperature. Show your work: AQ= Calculations with the Aluminum Foil Ball Calculate the heat gained by the water (Q) using the specific heat of water (4,186 J/kg C), the mass of the water, and its change in temperature. Show your work AQ How much heat is lost by the pennies? AQ= Copyright 2017 © Lincoln Leaming Solutions. All rights reserved. Name: Physics How much heat is lost by the aluminum? AQ= Date: Calculating the Specific Heats of Two Metals Directions: In this experiment, you will calculate the specific heats of two different objects. Calculate the specific heat of the pennies, the mass of the pennies, and the temperature change of the pennies. Show all of your work here Calculate the specific heat of aluminum, the mass of the aluminum, and the temperature change of the aluminum. Show all of your work here:!" Analysis Analysis for the Pennies Pennies that are made after 1982 are 98% zinc. Calculate your percent error using the proper specific heat value for zinc of 390 J/ kg Co. Show your work! Analysis for Aluminum Foll Aluminum foil is usually at least 98% aluminum. Calculate your percent error using the proper specific heat value for aluminum of 900 J/kg C. Show your work! Were your answers close to the accepted values? Name at least two sources of error. (Remember, incorrect math is not an experimental source of error!) Copyright 2017 Lincoln Leaming Solutions. All rights reserved.

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter5: Thermochemistry

Section: Chapter Questions

Problem 20E: A 45-g aluminum spoon (specific heat 0.88 J/g C) at 24 C is placed in 180 mL (180 g) of coffee at 85...

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