I Review I Constants I Periodic Table Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction: NHẠNO3 (s) → NH;(aq) + NO3 (ag) Part A Calculate the change in enthalpy for the reaction. (Use 1.0 g/mL as the density of the solution and 4.18 J/(g.°C) as the specific heat capacity.) Express the enthalpy change in kilojoules per mole to two significant figures. In order to measure the enthalpy change for this reaction, 1.25 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8 ° C and the final temperature (after the solid dissolves) is 21.9 ° C. Bνα ΑΣΦ You may want to reference (Pages 385 - 387) Section 9.7 while completing this problem. ΔΗΚn kJ/mol Request Answer Submit

I Review I Constants I Periodic Table Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction: NHẠNO3 (s) → NH;(aq) + NO3 (ag) Part A Calculate the change in enthalpy for the reaction. (Use 1.0 g/mL as the density of the solution and 4.18 J/(g.°C) as the specific heat capacity.) Express the enthalpy change in kilojoules per mole to two significant figures. In order to measure the enthalpy change for this reaction, 1.25 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8 ° C and the final temperature (after the solid dissolves) is 21.9 ° C. Bνα ΑΣΦ You may want to reference (Pages 385 - 387) Section 9.7 while completing this problem. ΔΗΚn kJ/mol Request Answer Submit

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter9: Energy And Chemistry

Section: Chapter Questions

Problem 9.102PAE: 9.102 A runner generates 418 kJ of energy per kilometer from the cellular oxidation of food. The...

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