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A student dissolves 14.2 g of ammonium chloride (NH4Cl) in 200. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0 °C to 18.9 °C over the course of 8.2 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH4Cl(s) NH(aq) + Cl¯ (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. - Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the rea enthalpy AHxn per mo of NH CI. O exothermic O endothermic O neither 3.43 kJ - 12.92 kJ mol 0 x10 X

A student dissolves 14.2 g of ammonium chloride (NH4Cl) in 200. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0 °C to 18.9 °C over the course of 8.2 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH4Cl(s) NH(aq) + Cl¯ (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. - Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the rea enthalpy AHxn per mo of NH CI. O exothermic O endothermic O neither 3.43 kJ - 12.92 kJ mol 0 x10 X

Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter1: Matter, Energy, And Measurement
Section: Chapter Questions
Problem 1.86P: 1-86 The specific heats of some elements at 25oC are as follows: aluminum = 0.215 cal/g · oC; carbon...
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( Try Again Your answer is incorrect. • Row 1: Your answer is incorrect. • Row 2: Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. • Row 3: Your answer is incorrect. A student dissolves 14.2 g of ammonium chloride (NH4C1) in 200. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0 °C to 18.9 °C over the course of 8.2 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH4C1(s) NH,(aq) + CI (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔΗ. per mole of NH Cl. rxn exothermic endothermic neither 3.43 kJ - 12.92 kJ mol x10 X
Transcribed Image Text:( Try Again Your answer is incorrect. • Row 1: Your answer is incorrect. • Row 2: Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. • Row 3: Your answer is incorrect. A student dissolves 14.2 g of ammonium chloride (NH4C1) in 200. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 23.0 °C to 18.9 °C over the course of 8.2 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH4C1(s) NH,(aq) + CI (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔΗ. per mole of NH Cl. rxn exothermic endothermic neither 3.43 kJ - 12.92 kJ mol x10 X
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