How many iron ball bearings (spheres) with a diameter of 3.00mm can be made from 10.0kg of an iron ore that is 47.0% iron (assume all of the iron in the ore can be recovered from the refining process)?
Probably just tubes of whatever material.
Ball bearings aren't made of iron. Iron is too soft
density of iron: 7.87 gm/cm^3 volume of 1 bearing: (4/3) pi r^3 (4/3) pi (0.15)^3 0.094 cm^3 Weight per bearing (7.87)(0.094) 0.74 gm Extractable iron (10 kg)(0.47) 4.7 kg (4700 gm) # of bearings 4700/0.74 6351 (Note: Has to be a number rounded down to the nearest integer.)
chromoly tubing 4130 is the type of tubing used on bikes .
