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Because water expands when it freezes; this can make the bottle break and sometimes explode as the water doesn't have room in the bottle to expand.
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What are the precautions that must be taken when collecting a water sample for analysis?
A water sample can be taken for biological examination or for chemical examination. The procedures for getting a proper sample vary slightly. Samples for legal purposes carry an additional need for having a demonstrable chain of custody.Biological samples:* Samples to be taken in sterile glass bottles with foil or teflon lines caps * Bottle lip of inside of cap must not be contaminated during sampling * Bottle to be labeled for later identification * If sample is from a tap take after purging the line by running the tap for several minutes * Fill bottle completely * Refrigerate samples above freezing during transfer to the labsChemical examination:* Assure the bottles are clean * Have appropriate preservatives, bottle materials and cap liners for each range of samples (organic, metals, solids, inorganics, ether soluble, BOD, COD, TOC) NOTE: To avoid ionic transfer never acid rinse plastic bottles before sampling for metals * Label all bottles * Sample mid stream flows * Don't skim top of flow for ether solubles or near the bottom for TSS * Fill bottle to an appropriate level. * Maintain bottle in cool light free environment for transportLegal samples* Maintain chain of custody by signing for bottles at lab * Conveying them in a sealed container * Labeling on site * Returning bottles in a sealed container * Signing off on the returned samples at the lab
What words should you be cautious of when taking standardized test?
Never
How often should you taste a lab experiments?
never unless instructed to.
Is Larry awesome?
no he's a horrible guy and you should never want to meet him
Why should you conserve coal?
Becuase it is a natural resource and if we run out then we will never have any ever again
Will super glue in a tube be ruined if it is frozen?
Never tried that. Stick a bottle in the freezer and see.
Why doesn't vodka freeze when you put it in the freezer?
Vodka is primarily ethanol (an alcohol). Ethanol has a freezing point of 114oC. Your freezer is not cold enough to bring ethanol to a freezing point, so your bottle of Vodka will never freeze.
Should you freeze coffee beans?
Absolutely NOT. Freezing coffee breaks down the oils naturally in the beans. Coffee is very porous and will absorb moisture, and other flavors such as "freezer burn." Your coffee should never be stored in the freezer or the fridge. Keeping it away from air is the key. In a well sealed container, in a dark cabinet at room temperature, your coffee will stay it's freshest!!
Why should you never heat a flask when sealed with a cork?
increased pressure and temperature
Does fire burn a hole in a bottle of water or pop?
== == Typically the liquid will prevent holes from forming. You can boil water in a paper cup. However, the heat will eventually evaporate all the liquid and the glass or can can melt and deform. Heat can also deform a plastic bottle and release the contents. If the can or bottle is sealed and exposed to high heat it can explode and send a shower of hot broken glass or metal for a long distance, it is very dangerous and should never be done with any sealed container.
What happens to a glue that you have bought and never used?
As long as it has remained sealed it should be fine to use.
Will a frozen bottle of soda explode?
Yes it can. I've heard it takes around 2 hours for this to happen. Luckily I've never forgotten to take it out of the freezer, yet.
How cold should a deep freezer be?
Depending on the size of the freezer, the amount of times the door/lid is opened and how good the seals are, anytime between 1 - 3 hours. But it's best to check the temperature of the food regularly
How do you add Freon to your freezer unit?
First you need to find the leak, you should never lose refridgerant unless there is a leak.
Can creditors send out an overdue invoice in an unsealed envelope?
No, NEVER!!!!!!!!!! All official mail should ALWAYS be in a SEALED envolope!!
Bourbon you have a 5th bottle of Schenley 8 year old Champion bourbon whiskey never opened is it still good?
yes it will be fine for all i know alcohol does not go bad I agree. Looking through my 1/10 PINT glass bottle of JACK DANIEL'S, sealed with a 1/2"x 3", 'Bottle Stamp' 'BUREAU OF ATF - DISTILLED SPIRITS - TAX PAID - I agree. Looking through my 1/10 PINT glass bottle of JACK DANIEL'S, sealed with a 1/2"x 3", 'Bottle Stamp' 'BUREAU OF ATF - DISTILLED SPIRITS - TAX PAID -
How long until a class A misdemeanor is sealed in Illinois?
It will never be sealed unless you apply for expungement.
