Question: HELP Instant cold packs contain solid NH4NO3 and a separate pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves

HELP

Instant cold packs contain solid NH4NO3 and a separate pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves in the water. The energy change dueto the dissolving process affects the aqueous solution: NH4NO3(s)NH4+(aq)+NO3(aq)H=25.7kJ Consider what happens when a cold pack containing 50.0gNH4NO3 and 125g water is squeezed. a) Is heat released or absorbed by the dissolving process? How do you know? b) How much heat (in kJ ) is released or absorbed by this dissolving process? c) What is the final temperature of the solution in the pack? (Assume mass =175g,csolution=4.18J/gC, initial temp =25.0C, and a well insulated system)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Chemistry Questions!

Instant cold packs contain solid NH4NO3 and a separate pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves in the water. The energy change due to the dissolving...

9. Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves, lowering the temperature....

Instant cold packs used to treat athletic injuries contain solid N H 4 N O 3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves, lowering the temperature...

Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves, lowering the temperature because of...

Instant hot packs, such as the hand warmers you might use while watching winter sports, might contain solid C a C l 2 and a pouch of water. When the hot pack is squeezed and folded, the pouch breaks,...

Based on the following essay I have to answer these questions; Section 1 what specifically is the problem you will address and what specifically is the solution you are offering? Your solution is...

Instant cold packs are often found in first aid kits and can be used to treat minor injuries such as muscle strains or burns. They contain a white powder called ammonium nitrate and have a small...

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...

Instant cold packs 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...

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...

The following represents a process used to assemble a chair with an upholstered seat. Stations A, B, and C make the seat; stations J, K, and L assemble the chair frame; station X is where the two...

Industrial Electronics, Inc. This case has been selected to give you experience in using cost accounting as the basis of a compensation system. You will have to evaluate an existing system, a...

The Folio column shows: Group of answer choices In which journal the entry originated In which ledger the entry originated Additional details about the entry that are relevant The name of the account

Which of the following is the UNIX distribution originally developed through AT&T Bell Labs? \ table [ [ SUSE ] , [ BSD ] , [ TurboUNIX ] , [ SystemV ] ]

4. Use the accompanying tables for Neon and Zeon to answer the questions that follow. Assume that the wage rate shown equals hourly output and income, and that the accumulated output and income are...

LO25.4 Relate how illegal immigration affects employment and wages in low-wage labor markets and impacts state and local budgets.

1. Which of the following statements are true? Which are false? Explain why the false statements are untrue. LO25.1 a. More immigrants arrive to the United States each year illegally than legally. b....