18. Two different metals, lead and copper, are heated to 100°C and each is immersed into a separate calorimeter containing 50.0 g of water at 20°C. The experimenter observed that 3.0 g of lead produced the same final temperature as 1.0g of copper. Which statement follows from this observation? a. Lead has a three times the specific heat capacity of copper. b. Copper has a three times the specific heat capacity of lead. c. Copper and lead have the same specific heat capacity. d. The final temperature does not depend on the mass of the metal used.

18. Two different metals, lead and copper, are heated to 100°C and each is immersed into a separate calorimeter containing 50.0 g of water at 20°C. The experimenter observed that 3.0 g of lead produced the same final temperature as 1.0g of copper. Which statement follows from this observation? a. Lead has a three times the specific heat capacity of copper. b. Copper has a three times the specific heat capacity of lead. c. Copper and lead have the same specific heat capacity. d. The final temperature does not depend on the mass of the metal used.

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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N.28.
23. A 2.00g sample of an element requires 42.6J to heat it from 50.0 to 80.0 degrees C. What is the specific heat capacity of the element?
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Two portions of 50.0 g of water, at 13.0 and 55.0 °C, respectively, were mixed inside a cup calorimeter. If the temperature of water after mixing became 31.0 °C, Calculate the heat capacity of the calorimeter. Given that specific heat of water is 4.184 J/ *C.g. a. 34.9 J/°C b. 69.7 J/°C c. 58.1 J/°C d. 23.2 J/°C e 46.5 J/C
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1. Melted methane was ignited and used to heat water in a thin metal container. After a short period of time, the methane was extinguished and final measurements were made. = 7.52 g = 7.20 g Mass of methane before burning Mass of methane after burning Mass of water in container Initial temperature of water Final temperature of water = 140.0 g = 10.0°C = 32.0°C a) Using this data, calculate the heat of combustion of methane in kJ/mol. Assume that all the heat from the methane was absorbed by the water b) Write the thermochemical equation for the complete combustion of methane.