![subject](/tpl/images/cats/himiya.png)
Some instant cold packs contain ammonium nitrate and a separate pouch of water. when the pack is activated by squeezing to break the water pouch, the ammonium nitrate dissolves in water and the pack gets cold. the heat of solution for ammonium nitrate is 25.4 kj/mol.
a. is the dissolution of ammonium nitrate endothermic or exothermic?
b. a cold pack contains 135.0 g of water and 50.0 g of ammonium nitrate. what will be the final temperature of the activated cold pack, if the initial temperature is 25.0 degree c? (assume that the specific heat of the solution is the same as that for water, 4.184 j/g degree c and no heat is lost).
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 11:40
Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 15:30
The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 20:30
How many grams of phosphorus are contained in 5.09 moles of phosphorus?
Answers: 1
You know the right answer?
Some instant cold packs contain ammonium nitrate and a separate pouch of water. when the pack is act...
Questions
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.08.2020 19:01
![question](/tpl/images/cats/istoriya.png)
History, 20.08.2020 19:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.08.2020 19:01
![question](/tpl/images/cats/mat.png)
Mathematics, 20.08.2020 19:01
![question](/tpl/images/cats/istoriya.png)
History, 20.08.2020 19:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.08.2020 19:01
![question](/tpl/images/cats/mat.png)
Mathematics, 20.08.2020 19:01
![question](/tpl/images/cats/mat.png)
Mathematics, 20.08.2020 20:01
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.08.2020 20:01