Avery thin layer of gold plating was placed on a metal tray that measures 25.22 cm by 13.22cm. the gold plating increased the mass of the plate by 0.0512 g. calculate the thickness of the plating. the density of gold is 19.31 g/cm ^3

If 25 ml of each of the liquids in the answer choices below were poured into a 100 ml beaker, which would form the second from the bottom layer? a. sea water – density of 1.024 g/ml b. mineral oil – density of 0.910 g/ml c. distilled water – density of 1.0 g/ml d. petroleum oil – density of 0.820 g/ml