Reply
Sun 20 May, 2007 12:30 pm
Osmium (Os) is the densest element known (density = 22.57 g/cm3). Calculate the mass in pounds and in kilograms of an Os sphere 40 cm in diameter (about the size of a grapefruit). [The volume of a sphere with a radius r is V = (4/3)r3.]
Use the volume of a sphere formula to determine volume in cm^3 (ml). The product of that volume and the density is the mass of the osmium sphere in g, convert grams to kilograms and then to pounds.
Check units for answer in lb.
Rap
Stumble It!
Tweet This
Bookmark on Delicious
Share on Facebook
Share on MySpace