Homework Answers
1- heat is basically a form of energy which result of a temperature diffrenece.
2-energy stored in chemical bond is in form of potential energy..
3- kinetic energy is the energy Which is being related by virtue of motion
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1. Heat is best defined as a. massless substance emitted when something burns. b. a form...
Identify the three statements from the list below that BEST describe the first law of thermodynamics....
Identify the three statements from the list below that BEST describe the first law of thermodynamics. A. The energy gained or lost by a system must equal the energy lost or gained by the surroundings. B. The total energy of the universe is decreasing. C. The work done by a system equals the work done on the surroundings. D.ΔE = Efinal – Einitial E. Heat released by the system is absorbed by the surroundings. F.ΔE = q + w G.Energy...
25) Objects can possess energy as (a) endothermic energy (b) potential energy (c) kinetic energy A) a only B) b...
25) Objects can possess energy as (a) endothermic energy (b) potential energy (c) kinetic energy A) a only B) b only C) c only D) bandc E) a and 33) The value of AH' for the reaction below is - 790 kl. The enthalpy change accompanying the reaction of 0.95 g of Sis_ k 33) 25 (s) + 302 (9) -2503 (9) A) 12 B) 23 C) -23 D) - 790 E) -12 34) The value of AH' for the...
Be sure to answer all parts. Select the correct definition for each of the following terms:...
Be sure to answer all parts. Select the correct definition for each of the following terms: (a) law of conservation of energy states that energy can neither be created nor destroyed states that energy cannot be created or destroyed, and cannot change from one form to another states that energy cannot be created or destroyed, but it can be changed from one form to another (b) thermochemistry the study of the conversions among different types of...
1.Match the passage with the appropriate term. cellular activities that requires the input of energy, such...
1.Match the passage with the appropriate term. cellular activities that requires the input of energy, such as deyhdration synthesis, are classified as ____ . material substances that contains stored or potential energy are classified as ____ . the measure of disorder (or randomness) of a system is called its ____ . the energy of physical movement, such as that of a rolling car, is classified as ____ . a work b. kinetic energy c.entropy d. fuel e. metabolism f....
it is relatively easy to change the temperature of a substance tha Indicate the answer choice...
it is relatively easy to change the temperature of a substance
tha
Indicate the answer choice that best completes the statement or anwers the qucation 1. Which one of the following statements is INCORRECT? Energy is neither created nor destroyed in chemical reactions b. Kinctic energy is the energy that results from an object's position. transfer heat from the system into the surroundings d. Increasing the thermal energy of a gas increases the motion of e. Energy is the capacity...
answers only mumber of the manganese increase by two units a b decrease by two units...
answers only
mumber of the manganese increase by two units a b decrease by two units there is no change in oxidation mumber e. d. increase by one unit decrease by one nit e. A freshly baked pie is placed near an open widow to cool. Which of the following statements best describes this 6 situation? The pie is the suroundings and loses heat to the system. a b. The pie is the system and loses heat to the surroundings...
help on B and F. 1. Propane, CzHs, burns in air. The reaction is exothermic and...
help on B and F.
1. Propane, CzHs, burns in air. The reaction is exothermic and the enthalpy change is equal to -2044 kJ/mol. a. Give the correct balanced chemical equation to represent the combustion of propane. CH₂ 191 +50201 320 (s) + 4H₂O(g) b. Fill in the blanks using information from the balanced thermochemical equation. mol rxn - mol CH3 - _ mol O2 = _ mol H20 - _ mol CO2- c. Circle your choice to complete the...
45. What is the matemathical relationship between potential energy (PE) and kinetic energy (KE)? a. They...
45. What is the matemathical relationship between potential energy (PE) and kinetic energy (KE)? a. They are directly proportional b. They are inversely proportional c. Their sum is equal to the total internal energy of the system (E) d. Both B and C are correct e. None of the above 46. What is a consequence of the 1 Law of Thermodynamics? a. The energy of a system can never change b. The energy of the surroundings can never change c....
just answer and discuss one Review QAS a. Energy transfers by heat are induced only as...
just answer and discuss one
Review QAS a. Energy transfers by heat are induced only as a result of a temperature difference between a system and its surroundings. b. Work and heat are associated with the process, so they are point functions C. If a system undergoes a process involving heat transfer with its surroundings but no work, that process is said to be adiabatic. d. The change in the internal energy of a system between two states is the...
6. Shown below is the heating curve for a substance. The five segments of the heating...
6. Shown below is the heating curve for a substance. The five segments of the heating curve are labeled A-E 130 100 T (°C) heat added (kJ) I. ndicate the phases of matter present when the substance is at each point (A-E) on the heating curve For this substance, which phase of matter has the largest heat capacity? How can you tell? In what state of matter would this substance exist at room temperature? How can you tell? IV. In...
25) Objects can possess energy as (a) endothermic energy (b) potential energy (c) kinetic energy A) a only B) b only C) c only D) bandc E) a and 33) The value of AH' for the reaction below is - 790 kl. The enthalpy change accompanying the reaction of 0.95 g of Sis_ k 33) 25 (s) + 302 (9) -2503 (9) A) 12 B) 23 C) -23 D) - 790 E) -12 34) The value of AH' for the...
it is relatively easy to change the temperature of a substance
tha
Indicate the answer choice that best completes the statement or anwers the qucation 1. Which one of the following statements is INCORRECT? Energy is neither created nor destroyed in chemical reactions b. Kinctic energy is the energy that results from an object's position. transfer heat from the system into the surroundings d. Increasing the thermal energy of a gas increases the motion of e. Energy is the capacity...
answers only
mumber of the manganese increase by two units a b decrease by two units there is no change in oxidation mumber e. d. increase by one unit decrease by one nit e. A freshly baked pie is placed near an open widow to cool. Which of the following statements best describes this 6 situation? The pie is the suroundings and loses heat to the system. a b. The pie is the system and loses heat to the surroundings...
help on B and F.
1. Propane, CzHs, burns in air. The reaction is exothermic and the enthalpy change is equal to -2044 kJ/mol. a. Give the correct balanced chemical equation to represent the combustion of propane. CH₂ 191 +50201 320 (s) + 4H₂O(g) b. Fill in the blanks using information from the balanced thermochemical equation. mol rxn - mol CH3 - _ mol O2 = _ mol H20 - _ mol CO2- c. Circle your choice to complete the...
45. What is the matemathical relationship between potential energy (PE) and kinetic energy (KE)? a. They are directly proportional b. They are inversely proportional c. Their sum is equal to the total internal energy of the system (E) d. Both B and C are correct e. None of the above 46. What is a consequence of the 1 Law of Thermodynamics? a. The energy of a system can never change b. The energy of the surroundings can never change c....
just answer and discuss one
Review QAS a. Energy transfers by heat are induced only as a result of a temperature difference between a system and its surroundings. b. Work and heat are associated with the process, so they are point functions C. If a system undergoes a process involving heat transfer with its surroundings but no work, that process is said to be adiabatic. d. The change in the internal energy of a system between two states is the...
6. Shown below is the heating curve for a substance. The five segments of the heating curve are labeled A-E 130 100 T (°C) heat added (kJ) I. ndicate the phases of matter present when the substance is at each point (A-E) on the heating curve For this substance, which phase of matter has the largest heat capacity? How can you tell? In what state of matter would this substance exist at room temperature? How can you tell? IV. In...
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