Chemistry hot pack & cold pack?

Question

As a lab tech. for a pharmaceutical company, you are responsible for preparing hot packs and cold packs. A hot
pack involves the release of heat when a salt and water are mixed. a cold pack becomes colder because mixing a salt and water absorbs heat.

which compound could you use to make a hot pack?
which compound could you use to make a cold pack?

Answer 1

A hot pack could involve calcium chloride or magnesium sulphate.



A cold pack will most likely be ammonium nitrate.

Answer 2

This is biology. The body can heal itself using its own natural heat. If you have a cold pack on a muscle it makes your body cold in that spot, and actually attracts natural body heat, and enzymes that heal. If you freeze your fingers in the winter the best way to warm them up is to hold them under cold water, which works the same way.

Answer 3

cold pack , for sure , is ammonium chloride in water

hot pack... am sorry

Answer 4

difficult factor. do a search on to a search engine. just that might help!