Homework Answers
a. Sublimation occurs after heat is absorbed while heat is released during condensation. So, sublimation is endothermic while condensation is exothermic. Hence, sublimation and condensation have different thermicity.
b. Freezing occurs by releasing heat and deposition (hange from gas to solid directly) also occurs with the release of heat. So both are exothermic. Hence, freezing and deposition have same thermicity.
c. Melting and evaporation both occurs by absorbing heat. So, both are endothermic and hence have the same thermicity.
d. Deposition and condensation both occur with the release of heat. So, both are endothermic and hence have the same thermicity.
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7-66 Indicate whether or not both members of each of the following pairs of physical state...
P80 Indicate whether or not each of the following statements about a physical equilibrium state is...
P80 Indicate whether or not each of the following statements about a physical equilibrium state is true or false. d.For systems in a state of physical equilibrium, no net macroscopic changes can be detected. b.For a liquid-vapor equilibrium situation, the two opposite processes occurring are evaporation and condensation. 7-81
Matter can be transformed from one physical state to another by adding or removing heat. Gas...
Matter can be transformed from one physical state to another by adding or removing heat. Gas Liquid Solid
Select all the processes displayed in the image above that are endothermic.
Choose one or more:
Vaporization
Sublimation
Condensation
Deposition
Freezing
Melting
Match the above to one of these words: endothermic exothermic D Question 7 Match the following....
Match the above to one of these words:
endothermic
exothermic
D Question 7 Match the following. requires energy releases energy evaporating condensing melting freezing sublimation deposition
need help 9. On the phase diagram provided, indicate where each term is applied: (click-and-drag the...
need help
9. On the phase diagram provided, indicate where each term is applied: (click-and-drag the associated terms to the diagram in the online submission) a. Melting/freezing b. Boiling/condensation C. Sublimation/deposition d. Triple point c. Critical point f. Solid phase g. Liquid phase h. Gas phase i. Pressure axis j. Temperature axis Fall 2019 CHEM 1001 A 7:30 PM - Mondays November 18+
Indicate whether the members of each of the following pairs of alkanes, represented using skeletal formulas,...
Indicate whether the members of each of the following pairs of alkanes, represented using skeletal formulas, are structural isomers. a. C-C-C-C and C-C-C-C-C
20. For each of the following phase changes, state the correct term and indicate if the...
20. For each of the following phase changes, state the correct term and indicate if the process is endothermic or exothermic.(4 points) A) liquid to solid B) gas to solid
Identify the change of state occurring in each situation. your friend's perfume producing an aroma that...
Identify the change of state occurring in each situation. your friend's perfume producing an aroma that fills the room making ice cream from milk in an ice cream maker formtion of frost on a cold windshield overnight wax dripping from a candle naphthalene solid (found in moth balls) producing fumes in the closet to deter moths your breath fogging up on your car windshield on a cold winter day Answer Bank deposition evaporation melting condensation sublimation freezing about us Careers...
to e whether each of the follo the following 8-26 Using Table 8-2, indicate whether soluble...
to e whether each of the follo the following 8-26 Using Table 8-2, indicate whether soluble in water. vease ter vo members of each of the ave like solubiszy (both mpounds is soluble or insoluble in a. FeSO4 b. FeCO3 c. Fe(NO3)2 d. FeCl2 827 Indicate whether or not the two membe following pairs of compounds have like soluble or both insoluble). a. NHC and NH Br b. KNO, and K c. Caco, and Ca3(PO4)2 d. Ni(OH)2 and 8-28 Indicate...
Entropy (S) The second factor involved in determining whether or not a process is spontaneous is...
Entropy (S) The second factor involved in determining whether or not a process is spontaneous is the change in randomness or entropy (AS). Entropy is represented by the symbol S. Again, experience can help us understand the relationship between entropy and spontaneous processes. If we look at the two drawings below, we can predict which picture represents the stack of marbles "before" and after they are bumped. We expect the stack of marbles (less random, lower entropy) to be the...
13. Indicate whether the following statements are true or false. If false, correct the statement so...
13. Indicate whether the following statements are true or false. If false, correct the statement so that it is true. a. A change in enthalpy for exothermic chemical reactions is negative. b. An endothermic reaction is one in which enthalpy is absorbed by the system from the surroundings. c. Condensation of water vapor is an example of an endothermic process. d. Heat, q, and enthalpy, AH, are state functions, meaning they depend on the path taken, and q = AH....
P80 Indicate whether or not each of the following statements about a physical equilibrium state is true or false. d.For systems in a state of physical equilibrium, no net macroscopic changes can be detected. b.For a liquid-vapor equilibrium situation, the two opposite processes occurring are evaporation and condensation. 7-81
Matter can be transformed from one physical state to another by adding or removing heat. Gas Liquid Solid
Select all the processes displayed in the image above that are endothermic.
Choose one or more:
Vaporization
Sublimation
Condensation
Deposition
Freezing
Melting
Match the above to one of these words:
endothermic
exothermic
D Question 7 Match the following. requires energy releases energy evaporating condensing melting freezing sublimation deposition
need help
9. On the phase diagram provided, indicate where each term is applied: (click-and-drag the associated terms to the diagram in the online submission) a. Melting/freezing b. Boiling/condensation C. Sublimation/deposition d. Triple point c. Critical point f. Solid phase g. Liquid phase h. Gas phase i. Pressure axis j. Temperature axis Fall 2019 CHEM 1001 A 7:30 PM - Mondays November 18+
Indicate whether the members of each of the following pairs of alkanes, represented using skeletal formulas, are structural isomers. a. C-C-C-C and C-C-C-C-C
20. For each of the following phase changes, state the correct term and indicate if the process is endothermic or exothermic.(4 points) A) liquid to solid B) gas to solid
Identify the change of state occurring in each situation. your friend's perfume producing an aroma that fills the room making ice cream from milk in an ice cream maker formtion of frost on a cold windshield overnight wax dripping from a candle naphthalene solid (found in moth balls) producing fumes in the closet to deter moths your breath fogging up on your car windshield on a cold winter day Answer Bank deposition evaporation melting condensation sublimation freezing about us Careers...
to e whether each of the follo the following 8-26 Using Table 8-2, indicate whether soluble in water. vease ter vo members of each of the ave like solubiszy (both mpounds is soluble or insoluble in a. FeSO4 b. FeCO3 c. Fe(NO3)2 d. FeCl2 827 Indicate whether or not the two membe following pairs of compounds have like soluble or both insoluble). a. NHC and NH Br b. KNO, and K c. Caco, and Ca3(PO4)2 d. Ni(OH)2 and 8-28 Indicate...
Entropy (S) The second factor involved in determining whether or not a process is spontaneous is the change in randomness or entropy (AS). Entropy is represented by the symbol S. Again, experience can help us understand the relationship between entropy and spontaneous processes. If we look at the two drawings below, we can predict which picture represents the stack of marbles "before" and after they are bumped. We expect the stack of marbles (less random, lower entropy) to be the...
13. Indicate whether the following statements are true or false. If false, correct the statement so that it is true. a. A change in enthalpy for exothermic chemical reactions is negative. b. An endothermic reaction is one in which enthalpy is absorbed by the system from the surroundings. c. Condensation of water vapor is an example of an endothermic process. d. Heat, q, and enthalpy, AH, are state functions, meaning they depend on the path taken, and q = AH....
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