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Instant hot and cold packs are used by athletes to quickly and conveniently treat an injury. They last for about 20 minutes. The packs take advantage of chemicals that either absorb a lot of heat or release a lot of heat when dissolved in water. When a chemical process absorbs a lot of heat it is called endothermic. When heat is released, it is called exothermic.
In cold packs, ammonium nitrate is used because it absorbs a lot of heat when it dissolves in water. The water and ammonium nitrate are in separate compartments in the pack. When the cold pack is needed, the chambers are broken and the ammonium nitrate dissolves in the water, absorbing heat and making the pack as cold as 0C.
In hot packs, calcium chloride or magnesium sulphate are used, along with the water. They release heat when the chambers are broken and the chemical dissolves in the water. A hot pack can reach a temperature of 90C.
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Related Questions
Cold packs were invented 25 years ago by Cardinal Health.
Cold packs and ice bags are placed on a localized site and provide topical relief
the ammonium nitrate used in most common ice packs retains cold temperatures
Dogs, known to be "A Man's Best Friend" only work in packs in the wild. Canines can also work in packs if they are pets, but it is way less likely to work in packs more than wild ones. So, in the conclusion, the answer is: Yes, wild dogs work in packs.
Yes, hot packs have exothermic reactions (the contents create heat) and cold packs have endothermic reactions (they require heat to occur, therefore making the surroundings colder). In hot packs its a reaction between water and a salt solution, and in cold packs its normally water and ammonium nitrate. peeace
Ice packs keeps lunches cold.
if you can see the lable for it then it is
No, they release energy.
Cold packs are recommended within the first 48 hours after back pain begins, with use of hot packs subsequently.
Cold packs are a category of therapeutic applications that are used deliver a comfortable and prolonged exposure to cold to a specific and isolated area of the body when in pain or injured. When a cold pack is used this way it is helpful in reducing pain and reducing inflammation. Cold packs are normally made with ice inside a closed container, or the newer form of a gel material that can be reused by placing in a freezer.
soothing joint and muscle aches
streching or cold then hot packs
Your texture packs may not work because you are using the incorrect version, so you will need to apply a patch to make them work.
is there ammonium nitrate found in walgreens cold packs
Cold packs, for bruises are one invention.
inside most instant cold packs
no just like the sims expantion packs don't work on the sims 2
Can you use ammonium nitrate as garden fertilizer i have it in the form of used chemical cold packs?
Ammonium nitrate is a common ingredient in fertilizers. Whether used cold packs are suitable for fertilizer or not depends on what else is in them.
Sponge baths, cold compresses, and cold packs are all wet cooling treatments
yes when disolved in water. It is in cold packs.
What exactly is it. I have never heard of this?
What? No, texture packs only affect mood and color.
Both types (hot and cold) of packs can be easily transported and used in travel. They do not take up a lot of room in a bag or box. If someone were to get hurt, a cold pack can quickly be used to help them. The same goes with a hot pack.
No, you need Sims 2 expasion packs for sims 2.
Expansion packs cant work on macs, i know from expirience. why they didnt make some for macs, i dont know.
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