A lump of pure copper weighs 25.106 in air and 22.089 when submerged in water ( 0.9982 ) at 20.0 . Suppose the copper is then rolled into a 242- foil of uniform thickness. What will this thickness be, in millimeters?
I don't know the units of that foil area (or the units of the weight)? The volume of the copper is given by the weight loss in water. V (25.106 - 22.089) wt / ( 0.9982 wt/vol) 3.022 length^3 this is probably cm^3 3.022 cc So you have an area of 242 whatever? you are going to roll that nugget into. The thickness of that sheet is 3.022 cc / 242 whatever^2 0.0125 cc / whatever^2 whatever^2 is the area units of the foil. If whatever is cm, then the thickness is 0.0125 cm or 0.125 mm If not cm then you have to convert and I can't help.
