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What would happen to the mass of the flask and its contents if the balloon was removed?
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What keeps the contents of a thermos flask hot or cold?
The thermal insulation used round the container holding the food. This is normally an evacuated, mirrored, double walled glass flask with an insulated stopper.
Why a thermaflask has double walls?
The double walls are required to contain a vacuum which prevents the transfer of heat, so the contents of the flask remain hot (or cold) for longer.
How will you determine when the unknown liquid in the flask has completely vaporized?
The unkown liquid in the flask has completely vaporized when there is no liquid in the flask.
How is convection prevented in thermos flask?
A glass thermos 'bottle' is constructed as a bottle-within-a-bottle and there is a slight vacuum between the bottles, since heat can't travel within a vacuum it will keep the contents hot/cold for a long time. In addition, they usually have a mirror coating on the outside to reflect hot/cold from the environment. The cap usually is hollow with an insulating material like cork or poly-foam.
Must a flask be a good conductor of heat?
so as to keep the flask hot hereby keeping the hot water inside the flask hot.
What is a divided flask?
A flask with two chambers. The contents are kept separate from each other until the experiment is set to begin. To mix the contents the flask is shaken.
How do you make a balloon reverse it's position without anyone touching it so that it inflates outside the flask rather than inside the flask?
Once again, heat the flask with the balloon on the inside. The cooled molecules will speed up again, creating energy. If the flask is left on the heat, the air pressure will grow, causing the balloon to be pushed back to the outside of the flask.
How do you use the word flask in a sentence?
You should always be cautious when heating chemicals in a flask. The glass flask containing phosphoric acid was soon leaking its contents onto the floor.
Why were the contents of the flask filtered?
You can use any type of bottle to collect the filtrate.
What happened the erlen Meyer flask withj balloon?
Learn to spell and people will tell you...
Examples of air exerts down ward pressure?
1. Put a little water (about 20 ml) in the flask and heat it to a boil. 2. Let the water boil vigorously for at least one full minute. 3. Take the flask off the hot plate and immediately place the balloon with the mouth over the flask's mouth. 4. Let cool slowly at room temperature (the balloon will be pushed inside out into the flask).
What happen if a flask is heated on a flame with a wire gauze?
- the flask is protected - the liquid is heated more uniform
If you cool a flask to -200degrise what would happen to the air?
I the flask was sealed, the air inside of the flask would take up less space and as a result, cause a drop in pressure inside the flask.
Do air particles change size or shape when air is removed from a flask?
No.
Why does a balloon fill with air when enclosed on top of a heating flask?
because the heat puts off air
During titration why use a conical flask and not a beaker?
So you can swirl the contents around without spilling them. =]
What keeps the contents of a thermos flask hot or cold?
The thermal insulation used round the container holding the food. This is normally an evacuated, mirrored, double walled glass flask with an insulated stopper.
