Sunday, February 7, 2010

How do i set up directions for a lab for this question, ';Whats the Density of Aluminum nails?

i am assigned to do a lab but required to make up my own set up directions for it.


The question is, Whats the Density of Aluminum nails?


can you please help me!How do i set up directions for a lab for this question, ';Whats the Density of Aluminum nails?
You've got to find the mass and volume of some nails. That can't be that hard. Select some nails and mass them. Then dump them into a graduated cylinder with some water in it so that the nails are submerged. Reading the difference in the volume of water before and after adding the nails will give you the volume by liquid displacement. Then compute the density in grams per cubic centimeter. Remember that 1 cubic centimeter is the same as 1 mL.


How do i set up directions for a lab for this question, ';Whats the Density of Aluminum nails?
You need to use the equation d=m/v or density = mass/volume





Weigh the nail to get the mass (g) and then use displacement in a graduated cylinder to find the volume (mL).





Displacement process: Fill a clean graduated cylinder with water to a height that would cover the nail. Record the value. Add the nail to the water and record the new higher value. The volume of the nail equals water and nail volume minus water alone volume.

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