3. The density of water at 25 °C is 0.997 g/mL and the density of vegetable oil at this temperature is 0.970 g/mL. Oil and water do not mix, so when 5 mL of each liquid is poured into a test tube, two layers form. Which layer is found on the top? 4. Give the name of the change of state associated with each of the following processes and indicate if the process is exothermic or endothermic. a. Dry ice disappears without melting. b. Dew on the lawn disappears when the sun comes out. c. Ice cubes in a soft drink disappear with time.

3. The density of water at 25 °C is 0.997 g/mL and the density of vegetable oil at this temperature is 0.970 g/mL. Oil and water do not mix, so when 5 mL of each liquid is poured into a test tube, two layers form. Which layer is found on the top? 4. Give the name of the change of state associated with each of the following processes and indicate if the process is exothermic or endothermic. a. Dry ice disappears without melting. b. Dew on the lawn disappears when the sun comes out. c. Ice cubes in a soft drink disappear with time.

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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In a simple calorimeter, a piece of metal weighing 48.67 g was heated to 120.0 °C and then put it into 100.0 mL of water (initially at 23.7 °C). The metal and water were allowed to come to an equilibrium temperature, determined to be 27.8 °C. Assuming no heat lost to the environment, calculate the specific heat of the metal. Is this process endothermic or exothermic? Explain. Show Your Work
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