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rubber stopper burst up because it has strong afinity with hydrogen
A beaker cover is called a rubber stopper or metal stopper(depends on what the stopper is made of).
To let air go thru
To avoid loss of substances.
A rubber bung (also called rubber stopper) is used in the laboratories for test tubes, flasks (made of glass usually). Bungs also used by winery industry for the wine bottles. A bung must fill well as a stopper. The bungs are of many sizes. Rubber bung can have one or more hole(s) for plugging in tube depending on the specification of the procedures. In chemical laboratory, to prevent the liquid chemical leaks or escape the container, we need the rubber bung that fit tightly to the container's open, therefore, the dimension of the rubber bung is concerned. These are some of the sizes that are commonly seen in chemical laboratory
You can buy an rubber stopper at widget-co.com. They are not that expansive ethier
rubber stopper burst up because it has strong afinity with hydrogen
i don't know... That's why I'm asking you. soo.. Does a rubber stopper float in water?
What is the purpose of wetting the glass tubing before inserting into a stopper?
Since the difference in volume corresponds to the volume of the stopper, the volume of the stopper=30.9-25=5.9ml Thus density of the rubber stopper=mass/vol=(8.46/5.9)g/ml
it is important because if you don't and touch the rubber stopper it will not show if it is positive.
This is very variable and depends on: - type of rubber - temperature - pressure on the stopper - the liquid in contact - other conditions of use
pantakip.
pantakip.
A beaker cover is called a rubber stopper or metal stopper(depends on what the stopper is made of).
remove the pedal arm pin so that you can freely move the pedal and have an access to the rubber stopper slots.
KCIO3-MNO2 cannot comes in contact with the rubber stopper otherwise, or a severe explosion may result.