2007-09-08 14:43:42 · 5 answers · asked by minh n 1 in Science & Mathematics ➔ Weather
Dry Ice is solid Carbon Dioxide and it's cold - about -109oF.
Ammonium Nitrate and water is what makes up a "cold pack", like you would use for a sports injury.
http://home.howstuffworks.com/refrigerator7.htm
2007-09-08 14:54:01 · answer #1 · answered by MontyH 5 · 0⤊ 0⤋
Dry ice is frozen carbon dioxide. If it touches water it sublimes, which means it changes to a gas without passing through a liquid state.
For lots of good information about ammonium nitrate and its uses, try an internet search on "eutectic salts," or "ammonium nitrate."
2007-09-08 15:53:03 · answer #2 · answered by aviophage 7 · 0⤊ 0⤋
You may have seen tanks without pumps, but chances are they were small fish. Theres an article in one of the aquarium magazines this month about pumpless tanks. BUT, a goldfish produces so much waste its not even funny. They need filters. They actually need double filtration. The "normal" goldfish (commons and comets) grow to 16 inches. The need a minimum of 55 gallons for a single fish. They also need around 100 gallons of filtration. Fantail goldfish grow to 6-10 inches and need at least 20 gallons for a single fish. So in short... Goldfish are large and messy. They need very large tanks with alot of filtration. Goldfish are not a beginners fish in any way. They grow far too large for that.
2016-05-19 23:29:19 · answer #3 · answered by cinda 3 · 0⤊ 0⤋
Not only will dry ice get cold, it produces a fog. That is how Hollywood makes those erie looking fog scenes.
2007-09-09 01:51:43 · answer #4 · answered by trey98607 7 · 0⤊ 0⤋
dry ice is solid carbon dioxide.it is called so because it does not wet anything.u dont mix it with water.it sublimes ,does not melt like water
2007-09-08 15:00:49 · answer #5 · answered by parry 1 · 0⤊ 0⤋