Exothermic Endothermic Heat Hotter than suroundings Heat Heat /Cooler than surroundings Heat Heat Heat Which statement is correct? O When an exothermic process takes place in the system, the entropy of the surroundings does not change. O When an exothermic process takes place in the system, the entropy of the surroundings may increase or decrease. O When an exothermic process takes place in the system, the entropy of the surroundings decreases. O When an exothermic process takes place in the system, the entropy of the surroundings increases.

Exothermic Endothermic Heat Hotter than suroundings Heat Heat /Cooler than surroundings Heat Heat Heat Which statement is correct? O When an exothermic process takes place in the system, the entropy of the surroundings does not change. O When an exothermic process takes place in the system, the entropy of the surroundings may increase or decrease. O When an exothermic process takes place in the system, the entropy of the surroundings decreases. O When an exothermic process takes place in the system, the entropy of the surroundings increases.

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...

See similar textbooks

Similar questions

40.0 g of an unknown metal at 100.0°C is added to 50.0 g of water at 30.0°C. When the system reaches equilibrium, the temperature is 34.5°C. What is the specific heat of the metal?
Please see the attached questions.
Simple Calorimetry. A piece of solid aluminum at 15.0°C is immersed in 12.3 g of nitrogen gas which is initially at 51.1°C and the system is allowed to equilibrate. Given that the specific heat of solid aluminum is 0.908 J/K/g and the specific heat of nitrogen gas is 1.0 J/K/g, what is the mass of the piece of solid aluminum if the final temperature is 34.7°C?
15.A sample of 125 g of cold water and 283 g of hot water are mixed in an ideal thermos and thermal equilibrium is reached. If the initial temperature of the cold water is 3°C and the initial temperature of the hot water is 91 °C, what will be the final temperature? Justify your answer
Please answer question 20 part A
To calibrate a calorimeter, 10.0 ml of 1.0 M NaOH and 5.0 ml of 1.0 M HCl was used in a calorimetry experiment. Which of the following will have NO EFFECT on the calculated heat capacity of the calorimeter, Ccal? a. Accidentally adding HNO3 instead of HCl. b.Adding a smaller volume of 1.0 M HCl. c.Using a bigger styrofoam ball for calibration. d.Using a wet test tube for calibration.
NW113AACE04-21 3. a hunk of metal-like substance was found in an archeological site. In an attempt to identify it, the metal was heated and placed in a calorimeter containing water and determined the specific heat of the metal. If the specific heat of the metal is 0.448 J/g °C, what is the approximate molar mass (atomic mass) and likely identity of the metal? (Hint: compare the molar mass (atomic mass) of metal that of metals in periodic table)
A 50.8 g sample of an unknown metal was heated to 700.0 ˚C then placed into 100.0 g of water (specific heat: 4.184) initially at 25.0 ˚C. The water and the unknown metal reach equilibrium when both are at 78.3 ˚C. What was the specific heat of the unknown metal?
17. An ice cube is placed in a sealed insulated container of hot water at 80°C. After five minutes, the ice cube disappears. Ice Cube Heat ener Hot Water 5 min. Water Which best describes the change that took place inside the container? The total heat energy in the container was reduced by the ice cube. The hot water lost the same amount of heat energy as the ice cube gained. in the hot water was reduced by kinetic energy in the ice cube. O Heat energy in the ice cube was dissipated into the hot water.
An unknown sample of coal is burned in an apparatus with a calorimeter constant of 0.8 kJ/°C. When a 0.443-g sample is used, the temperature change is 8.61°C. What is the energy density of the sample in kJ/g?
A student is attempting to determine the heat capacity of a Styrofoam cup calorimeter by pouring hot water into a Styrofoam cup containing cold water. The student determined the mass of the cold water to be 21.2455 g and its initial temperature to be 20.36 °C. The mass of the hot water was 24.2646 g and its initial temperature as 34.54 °C. The final temperature of the water after mixing was determined to be 24.57°C. The specific heat capacity of the water is 4.184 J/(g•°C). What is the heat capacity of the Styrofoam cup calorimeter? Assume the temperature of the calorimeter is the same temperature as the cold water. 4.184 J/°C 132.5 J/°C
Which one of the following statements is not correct? Select one: a. In any physical process, such as dew forming on grass or carbon dioxide subliming, the internal energy of the system does not change. b. When dew forms on grass overnight, the energy of the water molecules decreases. c. When dry ice sublimes to form CO2(g), the energy of the carbon dioxide increases. d. When dew forms on grass overnight, the energy of the surroundings (grass, air, etc.) increases. e. When dry ice sublimes to form CO2(g), the internal energy of the surroundings decreases.