a 2 09 1 3042 b 7 90 x 0 00034 c 138 012 7300 d 27 4428 x 2 97 326 57 e 83 8 24 013 0 0053013 f 592943 6 5 2584 g 2 06 106 45 767 41 26 h 965 43 x 3 911 9413 4136 6 If the amount of mercury in a polluted lake is 0 400 g mL what is the total mass in grams of Hg in the lake The lake has a surface area of 100 square miles and an average depth of 20 0 ft a Convert the area from square miles to square feet b Find the volume of the lake c Convert amount of mercury to g cm d Convert ft to cm and multiply amount of mercury by volume of lake