In this virtual lab, calorimetry will be performed to determine the heat 100 capacity, Ceal , of a coffee cup calorimeter. Imagine that, in lab the mass of a piece of iron, mre, is recorded as mfe = 51.56 g In the next step of the lab (as shown in the image) the piece of metal is heated up. Record the metal's highest temperature, Te. (Read to the tenths place) Tre = 94.6 °C Next, the metal is dropped into the coffee cup calorimeter. Please continue to the next image. In another step of this lab, the mass of ethanol (methanol ) in a coffee cup is recorded as methanol = 63.87 g The initial temperature of the ethanol, Tethanol1, is given to be 14.00 °C. In the next step of the lab (as shown in the image) the hot piece of iron is placed into the cool ethanol. Record the final temperature of the ethanol. Note this also serves as the final temperature of the metal. In the final step, using the specific heats (2.420 and 0.4498 J/(g · °C) for ethanol and iron, respectively) and the mass of ethanol and iron given, calculate the heat, taken up by the ethanol, qethanol , and the heat given off by the metal, qiron , and record them. Tethanol 2 = 24.0 1546 Gethanol = 1637 gFe = Incorrect Suppose a second trial is conducted using iron and ethanol as described. The results from this trial are calculated, yielding a 9ethanol value of 1565 J and a qr, value of –1633 J. Using these results, calculate the heat absorbed by the calorimeter. Ical = Incorrect
In this virtual lab, calorimetry will be performed to determine the heat 100 capacity, Ceal , of a coffee cup calorimeter. Imagine that, in lab the mass of a piece of iron, mre, is recorded as mfe = 51.56 g In the next step of the lab (as shown in the image) the piece of metal is heated up. Record the metal's highest temperature, Te. (Read to the tenths place) Tre = 94.6 °C Next, the metal is dropped into the coffee cup calorimeter. Please continue to the next image. In another step of this lab, the mass of ethanol (methanol ) in a coffee cup is recorded as methanol = 63.87 g The initial temperature of the ethanol, Tethanol1, is given to be 14.00 °C. In the next step of the lab (as shown in the image) the hot piece of iron is placed into the cool ethanol. Record the final temperature of the ethanol. Note this also serves as the final temperature of the metal. In the final step, using the specific heats (2.420 and 0.4498 J/(g · °C) for ethanol and iron, respectively) and the mass of ethanol and iron given, calculate the heat, taken up by the ethanol, qethanol , and the heat given off by the metal, qiron , and record them. Tethanol 2 = 24.0 1546 Gethanol = 1637 gFe = Incorrect Suppose a second trial is conducted using iron and ethanol as described. The results from this trial are calculated, yielding a 9ethanol value of 1565 J and a qr, value of –1633 J. Using these results, calculate the heat absorbed by the calorimeter. Ical = Incorrect
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.109QP: A 21.3-mL sample of 0.977 M NaOH is mixed with 29.5 mL of 0.918 M HCl in a coffee-cup calorimeter...
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