finishedPhysic-Lab11-SpecificHeat

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Chemistry

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Feb 20, 2024

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19 LAB 11 SPECIFIC HEAT Answer the questions based on data from the lab. 1) In the table, record the mass of our metal samples, mass of water, initial water temperature, final water temperature, and calculate the temperature rise. Note: In your calculations below, use 98.7 C for the boiling temperature of water. The video did not show the final boiling temperature correctly. 2) Temperature of the boiling water. _________ ⁰ C 3) Why is the temperature of the boiling water less than 100 ⁰ C? ___________________________________________________________________________ ___________________________________________________________________________ 4) Calculate the metal temperature drop and enter it into the previous table. 5) Calculate the heat, q, gained by the water for each sample and enter the data into the table. q = m water p rise The specific heat of water, C p , is 4.184 J/g- ⁰ C Material mass of sample (g) mass of water (g) Initial Water Temp ( ⁰ C) Final Water Temp ( ⁰ C) Water Temp Rise ( ⁰ C) Metal Temp Drop ( ⁰ C) Heat, q, Gained by Water (J) Specific Heat, C p (J/g- ⁰ C) Published Values of C p (J/g- ⁰ C) Aluminum Copper Tin Zinc
20 6) Since the heat gained by the water equals the heat lost by the metal, we can calculate the specific heat of each metal. Calculate and enter the specific heat of each metal in the table. q water = q metal q metal = m metal p drop Solving for Cp: p q C m T 7) Look up the specific heat of these metals on the internet or elsewhere. Then, enter them into the table. Did we come close? ________________________________
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