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What is vaccume freeze drying?
Under reduced pressure, under carefully controlled conditions, ice sublimes - it goes straight from ice to vapour - no liquid water. It is very useful for drying almost anything, but especially for anything that would be damaged by heating or boiling the water off. That is vacuum freeze drying - the name is often used without the "vacuum" included.
When will water not freeze?
if you add salt to water, it will freeze at a lower temperature.. i do not think it is possible at a temperature below zero degrees.
Does salt water or plain water freeze faster?
Pure water freeze faster.
How do cold air and hot water make the water freeze faster?
Cold air and hot water makes water freeze faster simply because the hot water is steaming and so the result is that there is less water to freeze. hot water = steam = less water less water = faster freeze cold air = faster freeze
Does water freeze at o celsius?
water freeze at oo degree celcius
Freezing reusable water bottles?
Yes it is possible to freeze the reusable water bottles overnight. One tip is not to fill it all the way. When water starts to freeze it expands, and if you fill the water bottle completely full, it could explode.
How does a water bottles make you get cancer?
Because there are really bad chemicals in plastic. Don't freeze water bottles or leave them out in the sun because the chemicals leak into the water that you consume.
As the pressure in a vessel containing water is reduced with a vacuum pump it begins to boil at some point but will it continue to boil if the vessel is sealed after it begins to boil?
If the vacuum pump is on, the water will continue to boil. If the vacuum pump is off as the vessel is sealed, the boiling will stop at a point of equilibrium.
How do you cool down your bunny?
I freeze water bottles then put them with the bunny and they lay next to it.
Why can't you warm or freeze water bottles?
Yes you can I have it on good authority that you can freeze anything. You can even freeze your posterior off in really cold weather. So be careful!
Can you freeze bpa free water bottles?
if the bottle has water in it you can freeze it but not for too long other wise it eill explode and the bottle will be stretched due to the particles in the water and is turning into a solid.
How can you preseve a liquid drink?
freeze it, refrigerator it, evaporate it then when wanted to drink add water, put in a sealed container
Why are some schools not allowed waterbottles?
Unfortunately, there were problems with kids bringing vodka in water bottles to school. For this reason some schools prohibit water bottles, or require that the water bottles be frozen (since alcohol doesn't freeze so a frozen wather bottle obviously can't be vodka).
How water is collected at a crime scene?
Fluids (of all types) are collected and sealed in air-tight vials or small bottles/jars.
What keeps water colder aluminum water bottles or stainless steel water bottles?
Vacuum insulated stainless steel bottles like one from Hydro Flask [see related link "hydro flask" below] or Thermos [see related link "thermos" below] will keep them coldest.
How does NASA make freeze dried food?
NASA does not make freeze dried food, they buy it from contractors that make it to NASA specifications (like everything else NASA uses). Freeze dried foods are made by freezing the food, then placing it in a vacuum chamber. The vacuum causes the frozen water in the food to sublime (change directly from solid to vapor without melting). After all the water is removed the food is removed from the vacuum chamber.
I left pork chops and steaks out for 7 hours to thaw are they still good they were in vacuum sealed packages in cold water?
yup, they are fine
