View desktop site, Post-lab questions 1. Insert ONE picture of yourself in full PPE here (include the hand warmer packet). While the water is heating, determine and record the mass of a clean, dry 50-mL beaker to the nearest 0. Please help and feel free to correct the first if i made any mistakes! LAB FOUR . 3. | •Understand, explain, and apply the concepts and uses of calorimetry. There are five measurements that must be made to determine the specific heat of the unknown metal: 1. Specific heat of a metal: Data and calculations Metal used is Mass of water in cup Mass of metal Final temp. Privacy With one of your metal samples, use the wooden calorimeter and determine the specific heat, , of the metal sample and ascertain the identity of the metal sample. endobj Experiment 15: Specific Heat of a Metal Purpose: To determine the specific heat of a substance. While the water is heating, determine and record the mass of … •Describe heat transfer processes quantitatively and qualitatively, including those related to heat capacity (including standard and molar), heat (enthalpy) of fusion, and heats (enthalpies) of chemical reactions. 67 oC. Once “c” is determined, use the Law of Dulong and Petit to calculate the approximate atomic mass of an unknown metal. Part of NCSSM CORE collection: This video shows the collection of data to determine the specific heat of a metal. <> Since most specific heats are known, they can be used to determine the final temperature attained by a substance when it is either heated or cooled. Procedure: Record all data in Data Table 1. Determine the mass of the piece of metal. 2. 1. <>>> Calculate the energy change (q) of the surroundings (water) using the enthalpy equation qwater = m × c × ΔT. 2) Briefly describe the methods used in this experiment to determine the heats of reaction. The specific heat of water is 4.184 J/g°C. %PDF-1.5 Determine the heat capacity of a copper vase which has a mass of 455 g. 2 0 obj I think i've figured out the first part of the question, but im stuck on the second. Download Ebook Specific Heat Of Metal Lab Answers Specific Heat Of Metal Lab Answers As recognized, adventure as well as experience nearly lesson, amusement, as capably as concurrence can be gotten by just checking out a books specific heat of metal lab answers along with it is not directly done, you could say you will even more in relation to this life, around the world. Compare the actual, and experimental specific heats for your metal in Part 1. of metal AT Water AT Metal Specific heat of metal Calculation of specific heat of metal: Law of Dulong and Petit Experimental slope of graph = Theoretical slope of graph = Calculation of slope: Experimental atomic mass of metal = Actual atomic mass of metal = Calculation of atomic mass of metal: Typically dries in 24 hours, heat cure at 425³ F Do not pay where mm is the mass of the substance and cc is the specific heat capacity of a substance. The specific heat of water is 4.184 J/g°C. When 12.29 g of finely divided brass at 95.0 °C is quickly stirred into 40.00 g of water at 22.0 °C in a … Compare the actual, and experimental specific heats for your metal in Part 1. Heat 250 mL of water in a 400-mL beaker until it is boiling gently. 2. q = mcΔT. Refer To The Specific Heat Capacity Values Given In Table 17.5 For The Water, Aluminum Can, And Stainless Steel Stirrer. Explain any differences and the sources of error. We can possibly identify an unknown metal by determining its specific heat using the preceding heat exchange formula with the specific heat of water taken to be 4.184 J/g oC. %���� © 2003-2021 Chegg Inc. All rights reserved. Answer to Post-lab questions 1. 4 0 obj Our result from this experiment was somewhat close to the specific heat capacity for water, but still off the mark. Specific Heat Of Metal Lab Answers|courierbi font size 12 format This is likewise one of the factors by obtaining the soft documents of this specific heat of metal lab answers by online. 3 0 obj ;P)�{�]f�SS�|��:�q��aԮ��]^v��H�E��P��5��U�Wϭ��r�gP�dz��ZD��W���(��[��໦Z�x�6{����Q�bq]�n���DήW7ޟ��Yz�Dq� ���$�=�f�3����9%��t���t�/����� x��\��6� �?�w�V$�,�i�\{����a�Z[�k��������73$%R)����v��p����Wo���Z5����4M�z�������������X�o�U�y������[����W�9�v}��g1��Y�G˓4� Experiment 1: Heat capacity 1. 2 Specific Heat of a Metal . & 3. From the table above, it is obvious that we cannot distinguish between copper and zinc, or between chromium and nickel, on the basis of specific heat alone. Post-lab Questions 1. In order to calculate the specific heat capacity of the metal, a large mass of metal will be heated to close to 100 C and quickly transferred to a known quantity of water in the calorimeter. Solved: Describe an experiment to determine the specific heat capacity of the metal . The calorimeter is insulated to reduce the loss or gain of energy to or from the surroundings. •Apply Hess's law … Heat lost by the pennies is equal to heat gained by the water in the calorimeter. What quantity is represented by the slope of the graph of specific heat vs 1/atomic mass? Get the detailed answer: In this virtual lab, you will use coffee cup calorimetry to determine the specific heat, c, of a metal. William Cleghorn invented the concept of specific heat to explain the different amounts of thermal energy that different materials absorb when their temperatures increase. 1. Download Ebook Specific Heat Of Metal Lab Answers you will determine the specific heat of a metal sample. 1. Hint: heat absorbed by the water in the foam cup is equal to the heat lost by the metal. Answers Lab 22 Specific Heat Of Metals Answers This is likewise one of the factors by obtaining the soft documents of this lab 22 specific heat of metals answers by online. Use average values and info for copper. �. Report Requirements: The report for this experiment should consist of the completed worksheet, including calculations, and graph. Does the data correlate with the law. In that case it can be determined by measuring the temperature change ΔT for the contents of the calorimeter and using their specific heat - the heat required to raise the temperature of 1 gram of the substance by 1°C. 1 0 obj Specific Heat of Metal by definition: The heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree). of water + metal Initial temp. ΔT = T final −T initial. File Type PDF Specific Heat Of Metal Lab Answers Specific heat of a metal LAB Specific heat of a metal LAB by Old School Chemistry 1 year ago 13 minutes, 42 seconds 242 views Determine the , specific heat , constant of a , metal , using a coffee cup calorimeter. Skip Navigation. Calculate the specific heat of the metal (J/goC). Chegg home. This is the initial temperature of the metal… v�{�"f���/_�,�>,�E�[���Ӓ�Es|^���i���yZ/�E�o�����|�́��M�q��>np����t�^���3�L��:�s�"2B��LF"K��>�,ʄK�zHs1�k���e���G;H�6r� k���Ӈ����D?>6��.�G�e雀]}D����ž�y�FB�a�O���@g�rř���_�=�������k�`��=ɣ:�g�]>�8�F��6w���?�a`��;V�5����I*��p,��,I����,�r��G�Γ�\.��_������2���G�غn���W��/y��N��2�\�5i��=�U�,"=_�! Determining The Specific Heat Of A Metal Lab Answers answer key helpteaching com. Introduction: You will calculate the “specific heat” constant of a metal, “c,” by measuring the heat exchanged in a calorimeter. You might not require more times to spend to go to the books introduction as well as search for them. C) 2. Use your other metal sample to determine if a styrofoam cup is a reasonable substitute for the wooden calorimeter. r 2. of water Initial temp. Heating the metal Imagine The metal sample will be heated to a high temperature then placed into a calorimeter containing a known quantity of water at a lower temperature. [���#��F�������r��g�f)w��s�,I�v����+D�>>����kO��Y�����D����Ωae��_��ꤡ,ԩ��jO�U��Ʒ6cS�����(���c��G����X�R�W2j��!aA���ԋ��'=ڢŗ{F1���BU.XUXn]⎁E��O� (�5�jZ�*���@\W�'�2w˭|�Q9ou��6��t��5�%U�V��m6��Qi��!�~��آ�PE����Z�4��k|�b.מ�����G������ʼ~|�r�t���ԥE�ƨth� 6x�*5W�A�'E찱�7^,�BV? The units of C are J/°C. SPECIFIC AND LATENT HEATS 17.6 Calculations 17.6.1 Calculate The Specific Heat Capacity Of The Unknown Metal. The specific heat capacity of a solid or liquid is defined as the quantity of heat required to change the temperature of a unit mass of a substance through a unit change in temperature. Background: Heat energy can be gained or lost by an object when it warms or cools. Shows how to calculate the specific heat of a metal (or any material for that matter) by calorimetry. where C water is the heat capacity of the water, the amount of heat needed to raise the temperature of the water by 1°C. Introduction: please use complete sentences. The metal sample will be heated to a high temperature then placed into a calorimeter containing a known quantity of water at a lower temperature. 2. Heat will flow from the metal into the water, raising the water temperature. 1. The result has three significant figures. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> The specific heat of cadmium, a metal, is fairly close to the specific heats of other metals. 1) What is the purpose of this experiment? To measure specific heat in the laboratory, a calorimeter of some kind must be used. Pay particular attention to reporting measurements, and results of calculations, to the correct number of significant figures, and comment on the accuracy and precision of your results in the questions. A calorimeter is a well-insulated container that can measure energy changes. Remembering that the heat gained by the water is equal to the heat lost by the metal, calculate the specific heat of your metal for each trial. Using this information, determine the specific heat (C) of copper. I'm doing a chemistry lab and am absolutely lost. endobj <> You might not require more get older to spend to go to the books introduction as competently as search for them. R#EJ��/$���hD�@c�KB�(���BIs[WA_��^X+�HO��=�k6[�� `�qsb�j����u��t�~��@0H�J�,���J>pq�c�L.��n��⷇ (`[������h���H��$ g��=���Y#�iɕH�5z Plot a graph of specific heat capacity vs 1/atomic mass. Molar 1 Metal mass Atomic mass Specific heat capacity J/g°C 0.95 Mg 24.31 Cu 63.55 0.35 Sn 118.7 0.2 Zn 65.38 0.45 Pb 207.2 0.11 Cd 112.4, chemical engineering questions and answers. 2. ... What Quantity Is Represented By The Slope Of The Graph Of Specific Heat Vs 1/atomic Mass? Insert Name Enthalpy and Specific Heat Page 2 of 8 CHM 113 POST-LAB Enthalpy and Specific Heat 1. Determining the amount of heat lost by hot metal to cool water can be used to determine the specific heat capacity of that unique metal, thereby helping us identify what metal it might be. Terms Note that the calorimeter cup is made of aluminum. 3. In this lesson students design a lab to determine the identity of an unknown metal through using specific heat calculations. endobj The magnitude of specific heat varies greatly from large values like that of water (4.184 J/g°•C) to small values like that of mercury (0.14 J/g°•C). Where To Download Specific Heat Of Metal Lab Answers ... you will determine the specific heat of a metal sample. Use These Values Along With Your Data And Eqs. stream 3. Temp of water + metal in foam cup _____ _____ Calculations: (don’t forget units and sig digs) – you should have 2 answers for each calculation because you did 2 trials. When equal masses of objects are heated to absorb an equal amount of heat, the object with smaller the specific heat value would cause the greatest increase in temperature. Heat the metal piece to a known temperature and measure this temperature precisely. Specific Heat Capacity Data for Various Metals Use the following data to verify the Law of Dulong and Petit, Atomic mass x Specific heat capacity = 24.9 Include the Specific heat capacity value for cadmium you calculated in Part 1. Determining The Specific Heat Of A Metal Lab Answers Key Takeaways: Specific Heat Capacity.
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