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kasi sabi ni ma'am at sir david makinig ka daw sa klase pag may lecture kung may time ka.
Wiki User
∙ 10y ago
Seraphine
It might contaminate the solution due to the presence of saliva in droplets. It will also be risky for the person who might or could have inhaled such vapors, or poisonous or toxic.
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What happen if dirty pipet is used and droplets of liquid adhered to inner wall of pipet?
Any serious determination of a physical property is made on very pure compounds; any impuridty modify the results.
A pipet delievers 9.98g of water at 20 degrees celsius What volume does the pipet deliver?
10.0cm^3
When using a graduated cylinder what is the lowest point of the liquid Called?
The meniscus. Make sure to always measure at that point. If your graduated cylinder/pipet/etc has the meniscus at 10 mL then the glassware has 10 mL in it.
What is a device for accurately measuring very small amounts of liquids?
Certain micropipettes can accurately deliver fluids as small as 1 microliter (or 1 millionth of a liter).
Remove the drop suspended from a pipet tip by.?
by touching it to the wall of the waste beaker
How do you deliver 5.00 mL of liquid by using a transfer pipet?
Absorb 5 mL of liquid in the pipet and then put it in your test tube, bottle, etc.
Which tool can measure only one quantity of liquid?
pipet
What is its meaning regarding the volume of liquid a pipet delivers?
A graduated pipette can deliver an exact volume of liquid.
How do you calibrate a pipet?
A pipet is calibrated by pouring a liquid of known volume into it and taking the reading in order to determine by how much it might be deviating. This technique is regarded as a quantitative method.
If you are trying to pipette an unknown liquid with a pipetman and the liquid keeps running out of the tip before you can transfer it what are two possible reasons for this what can you do to remedy t?
The unknown liquid could have a low suface tension like may organic liquids. Also, the plunger of the pipet could be being pushed all the way down when extracting the liquid ( should be at first stop) so it leaks out before the transfer is complete. To avoid this, pipet some liquid in and blow it out by pushing the plunger all the way down (second stop). Then draw up some more of the liquid and it should not leak.
What is the use of pipet in science?
A pipette is used to add a small measured quantity of a liquid to a container.
What should be done with the last bit of liquid remaining in the pipet after delivery?
Flush it away with water.
The effect of vapor condensation in the neck a beryl type pipet have on the reported molar mass?
it would give a higher molar mass b/c we are actually measuring the condensed liquid so the measured pipet would give higher mass. the higher the pipet is the higher molar mass.
What happen if dirty pipet is used and droplets of liquid adhered to inner wall of pipet?
Any serious determination of a physical property is made on very pure compounds; any impuridty modify the results.
What is a droppper pipet?
A narrow, usually calibrated glass tube into which small amounts of liquid are suctioned for transfer or measurement.
What is the main advantage of using pipette in measuring the volume of liquid?
The main disadvantage of using a pipet in measuring the volume of a liquid is that you cannot dispense large quantities.
Suppose that after delivery several drops of the water cling to the inner wall of the pipet because the pipet wall is dirty How does this technique error affect the reported density of the solid?
If water droplets stick to the inside of the pipet it will cause the volume of the water to be a lower value then what the pipet is calibrated to therefore the density of the water will be higher. It will affect it, because the mass that you are weighting will be greater than it should be, and this will give you a greater density.
