Tuesday
October 21, 2014

Homework Help: Chemistry I

Posted by Lindsey on Tuesday, November 1, 2011 at 1:11am.

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:

In order to measure the enthalpy change for this reaction, 1.25 of is dissolved in enough water to make 25.0 of solution. The initial temperature is 25.8 and the final temperature (after the solid dissolves) is 21.9 .
Calculate the change in enthalpy for the reaction. (Use as the density of the solution and as the specific heat capacity.)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - Instant cold packs, often used to ice athletic injuries on the field...
Chemistry 1150 - Instant cold packs, often used to ice athletic injuries on the ...
Chemistry - Instant cold packs used to treat athletic injuries contain solid ...
physics - A large container is separated into two halves by a 2.0 cm thick glass...
physics - A large container is separated into two halves by a 2.0 cm thick glass...
physics - A large container is separated into two halves by a 2.0 cm thick glass...
Science - Sports teams always have instant cold packs stored in their first aid ...
science - 1.Describe how the hot water and the cold water moved when the divider...
chemistry - a packaging engineer is working on a new design for cold packs. A ...
chemistry - if u had used 40ml of water and 6g of ammonium nitrate ,rather than ...

Search
Members