CatMolecule
Rising Star
My friend has 50mg of iron filings from his magnet hobby. He knows that it is exactly 50mg. He has an unknown amount of spice (with impurities but lets not consider that). How can he measure out 50mg of spice? He has two ideas.. find mass of iron filings and mass of spice molecule and then "eyeball" an amount of spice that would be 50mg relative to the iron filings. So if iron is 2x as heavy as spice, then my friend would make a pile of spice double the pile of iron filings. Another idea he had was to rig up a balance but he's not sure what to make the balance out of, being these are very light weights he is dealing with.