Find its mass using a beam balance,and volume by a measuring can full of water,and divide both to get volume
yes
What is the purpose of wetting the glass tubing before inserting into a stopper?
Between The Second And Thrid Fingers
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?æ is hard to find the density of a cork in water because?æ cork floats?æ in water. Density of a substance is given by its?æ mass divide?æ by its volume and since cork does not submerge, it is difficult to find its volume.
Density = mass/volume so the density of the stopper is 16.8/7.6 = 2.21 g/cm3.
Grease the top of the bottle!
The density of a wooden cork stopper is about 0.25 grams per ml. This value can be important in experiments where a cork stopper is used.
yes
If strong bases are present in the glass-stopper bottles, they may react with the glass and etch it or change the concentration of the base. Hence plastic-stopper bottles are used for bases.
What is the purpose of wetting the glass tubing before inserting into a stopper?
Run warm to hot water over the neck of the container. This will expand the neck and the stopper should come out.
Density of any substance is the ratio of the mass of the substance to its density! D =M/V , if you have the dimensions such as length breadth and width, or diameter; you can find the volume, if they have regular shapes. to understand densities in liquids please watch this video and subscribe @PhysicsFusion-sm3tr Hope this helps.
density of laminated glass
See these two questions for the answer:[http://wiki.answers.com/Q/What_is_a_rubber_stopper_or_cork_stopper_and_how_are_they_usedWhat is a rubber stopper or cork stopper and how are they used?]and[http://wiki.answers.com/Q/What_is_a_glass_plate_and_how_is_it_usedWhat is a glass plate and how is it used?]
It depends on its mass and volumeUsing d=m/v to find density
It can either be glass that has been ground to a powder, or two glass surfaces that have been ground to fit together precisely, such as a glass stopper in a glass chemical bottle.