Homework Answers
A. True
B. False
An endothermic reaction is any chemical reaction that absorbs heat from its surroundings.
C. False
Condensation of water is an example of exothermic reaction.
D. False
Heat (q) is a path dependent function, and enthalpy is a state function, according to first law of thermodynamics
E.True
F. False
When a gas is compressed by an external pressure,the work is positive ,because the work is being done on a system by its surroundings
Add Answer to:
13. Indicate whether the following statements are true or false. If false, correct the statement so...
2. Decide whether each of the following statements is true or false. If false, rewrite it...
2. Decide whether each of the following statements is true or false. If false, rewrite it to make it true. a. Entropy of the universe increases in all spontaneous reactions. wo False If entropy is bw enough it con be spontaneous, b. Reactions with a negative free energy change (A-Gº <0) are product-favored and occur with rapid transformation of reactants to products. True c. An exothermic reaction will always be spontaneous. I NO when AH is negative the reaction can...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo ld youjind Disneyland? (HİNT I pess that is why Disney male she move." "Angels О.he MULTIPLE CHOICE Choose the letter of the answer choice that best completes the statement or answers the question and place your selection in the space provided in the right hand margin.(1 point each) 1) Which one of the following is an exothermic process? 1) A) boiling soup B) ice...
Someone please help solving this asap thanks! 1. Calculate AE and determine whether the process is...
Someone please help solving this asap thanks!
1. Calculate AE and determine whether the process is exothermic or endothermic for the following cases: L. When a chemical reaction produces 90.7 kJ of heat but does no work on its surroundings. il. When combustion of a gas releases 2100U of heat to its surroundings. ii. When 33.05 kd of heat is transferred to the system and 22.0 kJ of work on the surroundings. Iv. When 121 kJ of work is performed...
Classify each of the statements as true or false. True False Answer Bank The entropy of...
Classify each of the statements as true or false. True False Answer Bank The entropy of a substance increases when a liquid vaporizes to a gas at any temperature. Entropy decreases as the temperature increases. An exothermic reaction is always spontaneous. Product formation is always favored in a reaction with a negative AH° and a negative AS. For an endothermic reaction, a decrease in temperature results in a decrease in the equilibrium constant. A reaction will have an equilibrium constant...
12. Which statement is always true for an exothermic reaction? A) The enthalpy change is negative....
12. Which statement is always true for an exothermic reaction? A) The enthalpy change is negative. B) The reaction absorbs heat from the surroundings. C) The enthalpy change is positive. D) The work done on the system is zero
1. The dimensions of the SI unit of energy, the Joule (J), are A. K B....
1. The dimensions of the SI unit of energy, the Joule (J), are A. K B. kg m s C. kg m2 s-2 D. kg m-1 s-2 E. kg m2 s-1 2. Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3 kilojoules of energy. How much energy does that represent in kilocalories? A. 3.36×103 kcal B. 3.357 kcal C. 191.8 kcal D. 0.192 kcal E. 1.918×105 kcal 3. What is the change in...
Please explain! Calculate Delta E, and determine whether the process is endothermic or exothermic for the...
Please explain!
Calculate Delta E, and determine whether the process is endothermic or exothermic for the following cases: A system absorbs 85 kJ of heat from its surroundings while doing 29 kJ of work on the surroundings; q = 1.50 kJ and w = -657 J; the system releases 57.5 kJ of heat while doing 13.5 kJ of work on the surroundings.
Determine whether each of the following statements about the thermodynamic functions are True or False as...
Determine whether each of the following statements about the thermodynamic functions are True or False as they apply to chemical reactions. True False Spontaneity is increased by positive entropy changes. True False All spontaneous chemical reactions have negative heats of reaction. True False Spontaneity is increased by negative enthalpy changes. True False Entropy and enthalpy are multiplied in the Gibbs free energy. True False The heat of reaction at constant pressure is always equal to the work done by the reaction.
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following questions 1. A reaction in which heat is absorbed is called a. Endothermic b. Exothermic c. Cooling d. Heating 2. A reaction where heat is released is called a. Endothermic b. Exothermic c. Cooling d. Heating 3. The energy change of a reaction that occurs at constant pressure is called the a. Total energy change b. Work c. Heat of reaction d pressure 4....
4. True or False a. During an endothermic reaction, energy is absorbed from the surroundings b....
4. True or False a. During an endothermic reaction, energy is absorbed from the surroundings b. The amount of heat needed for a reaction to occur is dependent on the path used to determine the products c. Metals tend to have higher specific heat values than H20 5. Calculate the change in heat, q, when 75 grams of aluminum is cooled from 200°C to 50 °C. Specific heat of Al is 0.90 (J/g °C)
2. Decide whether each of the following statements is true or false. If false, rewrite it to make it true. a. Entropy of the universe increases in all spontaneous reactions. wo False If entropy is bw enough it con be spontaneous, b. Reactions with a negative free energy change (A-Gº <0) are product-favored and occur with rapid transformation of reactants to products. True c. An exothermic reaction will always be spontaneous. I NO when AH is negative the reaction can...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo ld youjind Disneyland? (HİNT I pess that is why Disney male she move." "Angels О.he MULTIPLE CHOICE Choose the letter of the answer choice that best completes the statement or answers the question and place your selection in the space provided in the right hand margin.(1 point each) 1) Which one of the following is an exothermic process? 1) A) boiling soup B) ice...
Someone please help solving this asap thanks!
1. Calculate AE and determine whether the process is exothermic or endothermic for the following cases: L. When a chemical reaction produces 90.7 kJ of heat but does no work on its surroundings. il. When combustion of a gas releases 2100U of heat to its surroundings. ii. When 33.05 kd of heat is transferred to the system and 22.0 kJ of work on the surroundings. Iv. When 121 kJ of work is performed...
Classify each of the statements as true or false. True False Answer Bank The entropy of a substance increases when a liquid vaporizes to a gas at any temperature. Entropy decreases as the temperature increases. An exothermic reaction is always spontaneous. Product formation is always favored in a reaction with a negative AH° and a negative AS. For an endothermic reaction, a decrease in temperature results in a decrease in the equilibrium constant. A reaction will have an equilibrium constant...
12. Which statement is always true for an exothermic reaction? A) The enthalpy change is negative. B) The reaction absorbs heat from the surroundings. C) The enthalpy change is positive. D) The work done on the system is zero
Please explain!
Calculate Delta E, and determine whether the process is endothermic or exothermic for the following cases: A system absorbs 85 kJ of heat from its surroundings while doing 29 kJ of work on the surroundings; q = 1.50 kJ and w = -657 J; the system releases 57.5 kJ of heat while doing 13.5 kJ of work on the surroundings.
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following questions 1. A reaction in which heat is absorbed is called a. Endothermic b. Exothermic c. Cooling d. Heating 2. A reaction where heat is released is called a. Endothermic b. Exothermic c. Cooling d. Heating 3. The energy change of a reaction that occurs at constant pressure is called the a. Total energy change b. Work c. Heat of reaction d pressure 4....
4. True or False a. During an endothermic reaction, energy is absorbed from the surroundings b. The amount of heat needed for a reaction to occur is dependent on the path used to determine the products c. Metals tend to have higher specific heat values than H20 5. Calculate the change in heat, q, when 75 grams of aluminum is cooled from 200°C to 50 °C. Specific heat of Al is 0.90 (J/g °C)
Most questions answered within 3 hours.
-
In testing a new drug, researchers found that 5% of all patients
using it will have...
asked 21 minutes ago -
List the six general types of information management systems,
and give one logistics application to each...
asked 12 minutes ago -
XYZ corporation uses statistical quality control to monitor the
quality of their product. They have determined...
asked 15 minutes ago -
If a liquid
contains 60% sugar and 40% water through out its composition then
what is...
asked 24 minutes ago -
The data in set A represents prices (with tax included) of a
large cup of regular...
asked 33 minutes ago -
How do neuropsychological assessments provide information about
impairment? How could this information be misused?
asked 26 minutes ago -
Define SNP and elaborate various type of SNPs and their
importance in pharmacogenetics?
asked 30 minutes ago -
Description
There are 4 classes, Figure is the base class，both Triangle,
Rectangle and Circle are all...
asked 31 minutes ago -
What will the standard deviation of these exam grades be? A
square bracket means inclusive, so...
asked 40 minutes ago -
Beginning Retained Earnings are $ 79 comma 000 $79,000; sales
are $ 31 comma 700 $31,700;...
asked 43 minutes ago -
Please explain/demonstrate how to use NLTK to test unigram,
bigram, and trigram character models on guessing...
asked 49 minutes ago -
what you feel is most important to you and why regarding your
typing skills?
asked 50 minutes ago