Earth's oceans have an average depth of 3800 m, a total area of 3.63*10^8 km^2, and an average concentration of dissolved gold of 5.8*10^?9 g/L. (a) How many grams of gold are in the ocean? (b) How many m^3 of gold are in the ocean? (c) Assuming the price of gold is $328.00/troy oz, what is the value of gold in the oceans? (1 troy oz = 31.1 g. Density of gold = 19.3 g/cm3)? Instructions?