Homework Answers
a. If the work was done on the system then the sign will be positive since,the system was absorbing energy.
b. Enthalpy of the reaction is negative means the energy has been released i.e. the reaction is exothermic.
c. Heat of the system is negative means thermal energy left the system.
d. When the surrounding experience an increase in temperature it means the system has transferred energy to surrounding i.e. the q of system is negative.
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5) For each of the following, determine the meaning of...
1.) A thermometer placed in a solution undergoing a chemical reaction indicates an increase in temperature...
1.) A thermometer placed in a solution undergoing a chemical reaction indicates an increase in temperature as the reaction proceeds. Is this reaction endothermic or exothermic? Describe if heat energy is lost or gained from the reaction (the system) to the surroundings. What is the sign of the enthalpy change (H) of this reaction?
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...
13. Indicate whether the following statements are true or false. If false, correct the statement so...
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a. You perform a coffee cup calorimetry experiment to determine the enthalpy change for the dissolution of sodium chloride in water. You add 10g of NaCl to 100 ml of water at 20.00 degrees C and mix well. The final temperature is 19.80 degrees celsius which of the following statements is true. -energy moves from the surroundings to the system due to the endothermic reaction -energy moves from the system to the surroundings due to the endothermic reaction -energy moves...
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2) Circle the relationship that satisfies the following. (spts) 1) As the pressure of an ideal...
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The easiest way to determine whether a process is exothermic or endothermic is to note the...
The easiest way to determine whether a process is exothermic or endothermic is to note the change in temperature in a calorimeter; a positive temperature change indicates an exothermic process while a negative temperature change indicates an endothermic process. Select the Experiment tab in the Simulation, and then click Run Demonstration. Perform the described tasks while specifically focusing on the third demonstration, where LiCl is dissolved in water, paying attention to the temperature change and the microscopic view. Match the...
Match the words in the left column to the appropriate blanks in the sentences on the...
Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. gains 1.Drag the beaker of water onto the support. The internal energy of water will be analyzed, which makes water the exothermic being studied loses 2. When the slider is dragged down to cool the water, the water thermal energy to the ice, and the ice is system considered part of the endothermic...
can someone help me explain how to answer these question using this simulation ? 3. Adjust...
can someone help me explain how to answer these
question using this simulation ?
3. Adjust the temperature for an endothermic reaction. Then adjust the temperature for an exothermic reaction. What happens? K... When I decreases creases Sign of AH When Tincreases Positive (endothermic) Negative (exothermic) a. Write the chemical equation for the endothermic reaction when An=0. Is heat a reactant or a product? b. Write the chemical equation for the exothermic reaction when An=0. Is heat a reactant or...
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...
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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...
2) Circle the relationship that satisfies the following. (spts) 1) As the pressure of an ideal gas decreases the temperature (INCREASES : DECREASES) at constant volume and mols. II) As the amount (mols) of an ideal gas increases the pressure (INCREASES : DECREASES) at constant volume and temperature. III) If the enthalpy of a reaction is positive the reaction is an (ENDOTHERMIC : EXOTHERMIC) reaction. IV) If the heat of a reaction is negative the reaction is an (ENDOTHERMIC :...
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
Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. gains 1.Drag the beaker of water onto the support. The internal energy of water will be analyzed, which makes water the exothermic being studied loses 2. When the slider is dragged down to cool the water, the water thermal energy to the ice, and the ice is system considered part of the endothermic...
can someone help me explain how to answer these
question using this simulation ?
3. Adjust the temperature for an endothermic reaction. Then adjust the temperature for an exothermic reaction. What happens? K... When I decreases creases Sign of AH When Tincreases Positive (endothermic) Negative (exothermic) a. Write the chemical equation for the endothermic reaction when An=0. Is heat a reactant or a product? b. Write the chemical equation for the exothermic reaction when An=0. Is heat a reactant or...
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