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Why an Erlenmeyer flask containing a hot solution is not tightly stoppered?
Wiki User
∙ 6y ago
Because... if it's tightly sealed - during cooling the volume of the solvent will decrease - making the pressure inside lower than outside he flask. This could be enough for the glass to shatter - spilling the contents.
Wiki User
∙ 7y ago
Wiki User
∙ 6y agoThe purpose is to allow vapors to escape; also to avoid breaking.
Wiki User
∙ 7y agoIf you stopper it, and pressure builds up inside the flask to a sufficient level, it will blow the stopper off, or worse, the flask could explode. Very dangerous.
Wiki User
∙ 6y agoEvaporation of solvent leads to a change of the solute concentration.
Wiki User
∙ 11y agoit builds pressure
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density
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its not a substance its a state of matter which is the solid the solid's particles are packed tightly together glad 2 help !! :)
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They are tightly packed and vibrate.
What hazards are associated with heating a liquid in a test tube that is tightly closed with a cork?
creates pressure
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like this ::::::::::::: ::::::::::::: ::::::::::::: though a little closer. It depends on the metal, but atoms in a pure solid are tightly-packed into a crystalline structure. The shape of the crystal is dependent upon the atom.
Why a conical flask containing a hot solution is not tightly stoppered to prevent solvent during cooling?
Because... if it's tightly sealed - during cooling the volume of the solvent will decrease - making the pressure inside lower than outside he flask. This could be enough for the glass to shatter - spilling the contents.
Can sodium hydroxide be stored in a Erlenmeyer flask?
In a tightly sealed container, preferably one that doesn't have a lot of moisture in the air. The container should be a plastic container as glass container can react with sodium hydroxide and melt.
What crushes a tightly corked tin can containing steam when cold water is poured on it?
atmospheric pressure
How do you make 3M H2SO4?
Transfer approx. 600 mL of demineralized water in a 1 L volumetric flask; add very slowly 324,24 mL of 98 % sulfuric acid. Wait to cool at 20 0C in a thermostat; add slowly water up to the mark. Avoid splashes ! Stir the content of the flask, transfer the solution in a tightly stoppered glass or polythene bottle; put a label on the bottle containing the name of the solution, concentration, date, operator. For accuracy is necessary to titrate the solution with sodium hydroxide.
What is the shelf life of solution of copper sulfate distilled water and sulfuric acid?
Indefinite, if the containers were tightly sealed.
What is best to use to hold a liquid with a toxic vapor?
A toxic vapor would be safest in glass container with a tightly sealed lid. Vapors can seep from the smallest opening, so the seal must be firm.
When cold water is poured over a tightly corked tin can containing steam the tin can gets crushed What crushes the tin can?
Air pressure from outside and vacuum effect from inside.
What is the comparative and superlative form of tightly?
more tightly, most tightly
Will a rock containing quartz weather fast or slow?
Slow because Quartz is a very stable mineral at the Earth's surface and is very tightly bound giving it very unusual and useful properties.
What part of speech is tightly?
Tightly is an adverb.
Is tightly an adjective?
nope, it is an adverb. It is describing the verb. Ex: tightly touched tightly held
How would 300 mL of a 0.9 percent sodium chloride solution be prepared using sodium chloride crystals?
1. Dry some 5-6 grams of sodium chloride in an oven at 110 0C for 30 min. 2. Place the crucible with the salt in a desiccator for 30 min. 3. Weight on an analytical balance 4,5 g of NaCl sodium chloride. 4. Transfer quantitatively the salt in a 0,5 L volumetric flask. 5. Add 450 mL distilled (or demineralized) water in the flask. 6. Put the flask in a thermostat at 20 0C for 30 min. 7. Add distilled (or demineralized) water in the flask to the mark. 8. Transfer the solution in a tightly stoppered bottle. 9. Add a label with the name of the solution, concentration, data, name of the operator.
