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Question 8 please

Question 8 please

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question 8 please
### Calorimetry Problems for Educational Purposes 7. An ice cube is dropped into a foam cup calorimeter containing 95.0 mL of water at 20.0°C. The temperature drops to 13.7°C as the ice cube melts. How much total heat (in kJ) was released by the water into the ice cube? 8. 66.80 g of lead is heated to 155°C and then placed into a foam cup calorimeter containing 70.0 mL of water at 15.2°C. Assuming no heat loss, calculate the final temperature of the water and lead. ### Explanation The text provides two calorimetry problems. - Problem 7 involves a scenario where an ice cube is added to water in a calorimeter, and it results in a temperature drop. The problem seeks to determine the amount of heat released by the water to melt the ice cube. - Problem 8 involves heating a specified mass of lead to a high temperature and then immersing it in water contained in a calorimeter. The objective is to calculate the final temperature after heat exchange between the lead and water, assuming no heat loss to the environment. ### Diagrams No specific diagrams or graphs are provided in this text. However, students can visualize the data by sketching a simple calorimeter setup for both problems, showing initial and final states to help understand the heat flow dynamics.
Transcribed Image Text:### Calorimetry Problems for Educational Purposes 7. An ice cube is dropped into a foam cup calorimeter containing 95.0 mL of water at 20.0°C. The temperature drops to 13.7°C as the ice cube melts. How much total heat (in kJ) was released by the water into the ice cube? 8. 66.80 g of lead is heated to 155°C and then placed into a foam cup calorimeter containing 70.0 mL of water at 15.2°C. Assuming no heat loss, calculate the final temperature of the water and lead. ### Explanation The text provides two calorimetry problems. - Problem 7 involves a scenario where an ice cube is added to water in a calorimeter, and it results in a temperature drop. The problem seeks to determine the amount of heat released by the water to melt the ice cube. - Problem 8 involves heating a specified mass of lead to a high temperature and then immersing it in water contained in a calorimeter. The objective is to calculate the final temperature after heat exchange between the lead and water, assuming no heat loss to the environment. ### Diagrams No specific diagrams or graphs are provided in this text. However, students can visualize the data by sketching a simple calorimeter setup for both problems, showing initial and final states to help understand the heat flow dynamics.
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