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What else can I help you with?
Can a thermos flask stopper leak air?
Yes, a thermos flask stopper can leak air if it is not sealed properly or if the gasket or sealing mechanism is damaged. This can compromise the insulation properties of the flask, allowing heat transfer and reducing its effectiveness in keeping liquids hot or cold. Regularly checking and maintaining the stopper can help prevent air leaks.
What is used to seal the top of a test tube or flask?
A stopper or cap is typically used to seal the top of a test tube or flask. It helps prevent contamination and evaporation of the contents inside. Stopper materials can vary from rubber to plastic depending on the application.
How do you prepare 6N HNO3 solution?
Example: starting fom nitric acid 65 % For 1 000 mL nitric acid solution 6 N: - put in a clean conical volumetric flask of 1L, 581,6 mL of the 65 % acid - add slowly demineralized water to the mark, at 20 0C - attach the cap of the flask - stir the flask - attach a label with HNO3 6 N, the date of preparation, name of the operator
How do clean a beaker?
Acid washing it should do. I assume you are in a lab...in which case a 1:1 Hydrochloric Acid solution can be poured into the flask. DON'T FORGET TO PUT GOGGLES AND GLOVES ON. Put the lid on. Shake the flask and turn it to ensure all surfaces of the glass inside are being washed with the acid. Then, give it a good triple rinse with de-ionized water. If you are just at home, pour in some white vinegar and let it sit for a while. That should break up anything that's inside.
What is. Unsafe procedure while heating a nutrient solution in a flask?
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What stoppers a flask?
Normally cork or rubber is used as a stopper in a flask.
Can a thermos flask stopper leak air?
Yes, a thermos flask stopper can leak air if it is not sealed properly or if the gasket or sealing mechanism is damaged. This can compromise the insulation properties of the flask, allowing heat transfer and reducing its effectiveness in keeping liquids hot or cold. Regularly checking and maintaining the stopper can help prevent air leaks.
What is the use of iodine flask?
An Iodine Flask is essential an Erlenmeyer Flask with a stopper used for the wet chemical analysis "Iodine Determination" . This analysis is typically performed on fatty acids, oils and shellac varnishes.
What size rubber stopper fits in a 1000 ml Erlenmeyer flask?
Size 8.
What is used to seal the top of a test tube or flask?
A stopper or cap is typically used to seal the top of a test tube or flask. It helps prevent contamination and evaporation of the contents inside. Stopper materials can vary from rubber to plastic depending on the application.
Why an Erlenmeyer flask containing a hot solution is not tightly stoppered?
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.
Which solution in the titration is taken in conical flask?
The solution being titrated is placed in the conical flask. The titrant (the solution being added during titration) is then slowly added to the solution in the conical flask until the endpoint is reached.
How does a tight fitting plastic stopper on a flask minimise heat transfer?
It prevents heat transfer by convection as it prevents contact between the surrounding air and air inside the flask. It prevents heat transfer by conduction as it is a poor conductor of heat.
What is the name of solution taken in the flask during titration?
The solution taken in the flask during titration is called the "analyte" solution. It is the solution being analyzed and measured for its concentration or reacting with a standardized solution.
Why should the Na OH pellets be completely dissolved in the preparation of the Na OH solution?
Well the point of a solution is that any solids involved are dissolved. Otherwise there is never any chance of having a homogenous solution (equal concentration, anywhere in the volumetric flask)
Why there is a exchange of heat in a thermos flask after 2hours?
Because - even though the vacuum between the layers of the flask is almost perfect, the junction between the flask and its stopper creates a 'weak spot' where a small amount of heat can escape over time.
What is the use of the filterring flask?
The filtering flask is used to collect the solution resulted from a filtration.
