A 50.5 g sample of polystyrene is put into a calorimeter (see sketch at right) that contains 200.0 g of water. The polystyrene sample starts off at 85.4 °C and the temperature of the water starts off at 22.0 °C. When the temperature of the water stops changing it's 26.7 °C. The pressure remains constant at 1 atm. Calculate the specific heat capacity of polystyrene according to this experiment. Be sure your answer is rounded to 2 significant digits. 0- gᵒ *°C X thermometer. insulated container water sample. a calorimeter

A 50.5 g sample of polystyrene is put into a calorimeter (see sketch at right) that contains 200.0 g of water. The polystyrene sample starts off at 85.4 °C and the temperature of the water starts off at 22.0 °C. When the temperature of the water stops changing it's 26.7 °C. The pressure remains constant at 1 atm. Calculate the specific heat capacity of polystyrene according to this experiment. Be sure your answer is rounded to 2 significant digits. 0- gᵒ *°C X thermometer. insulated container water sample. a calorimeter

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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A 55.1g sample of polystyrene, which has a specific heat capacity of 1.880·J·g−1°C−1, is put into a calorimeter (see sketch at right) that contains 200.0g of water. The temperature of the water starts off at 25.0°C. When the temperature of the water stops changing it's 31.9°C. The pressure remains constant at 1atm . Calculate the initial temperature of the polystyrene sample. Be sure your answer is rounded to the correct number of significant digits.
A 29.00 g sample of metal alloy is heated to 92.6 °C; then placed in 55.23 g of water in an insulated calorimeter at 21.3 °C. If the final temperature of the system is 43.9 °C, what is the specific heat of the metal alloy? Assume that the calorimeter absorbs a negligible amount of heat.
A certain chemical reaction releases 269. kJ of heat energy per mole of reactant consumed. Suppose some moles of the reactant are put into a calorimeter (a device for measuring heat flow). It takes 3.21 J of heat energy to raise the temperature of this calorimeter by 1 °C. Now the reaction is run until all the reactant is gone, and the temperature of the calorimeter is found to rise by 5.0 °C. How would you calculate the number of moles of reactant that were consumed? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols. moles consumed = x10 010 X Ś
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A 57.0g sample of aluminum is put into a calorimeter (see sketch at right) that contains 250.0g of water. The aluminum sample starts off at 96.9°C and the temperature of the water starts off at 23.0°C. When the temperature of the water stops changing it's 26.2°C. The pressure remains constant at 1atm. Calculate the specific heat capacity of aluminum according to this experiment. Be sure your answer is rounded to 2 significant digits. Please type answer note write by hend.
A 1.595 g samples of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 23.67 degrees Celsius to 29.44 degrees Celsius. The heat capacity (calorimeter constant) of the calorimeter is 30.29 kJ/degrees Celsius, what is the heat of combustion per gram of the material?
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A 32.1 g piece of aluminum (which has a molar heat capacity of 24.03 J/°C·mol) is heated to 82.4°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 J/g°C) initially at 22.3°C. The final temperature of the water is 25.8°C. Calculate the mass of water in the calorimeter.
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A 56.1 g sample of polystyrene, which has a specific heat capacity of 1.880 J-g °C-1 is put into a calorimeter (see sketch at right) that contains 250.0 g of water. The temperature of the water starts off at 24.0 °C. When the temperature of the water stops changing it's 29.8 °C. The pressure remains constant at 1 atm. Calculate the initial temperature of the polystyrene sample. Be sure your answer is rounded to the correct number of significant digits. °C thermometer. insulated container water sample. a calorimeter 區 OU Ar
A sample of aluminum, initially at 5.0 °C, was placed in 18.0 g of water, initially at 25.0 °C. The final temperature of the water and the metal was 21.0 °C. The specific heat of water is 4.184 J g-1 °c-1 and aluminum is 0.940 J g-1 °C-1. Ignore the heat capacity of the container. What is the mass (in g) of the aluminum?