Question

Earth's oceans have an average depth of 3800m, a total surface area of 3.63x10^8 km^2 and an average concentration of dissolved gold of 5.8x10^-9 g/L

(a) How many grams of gold are in the ocean?
(b) How many cubic meters of gold are in the ocean?
(c) Assuming the price of gold is $370,000/troy oz, what is the value of gold in the oceans (1 troy oz=31.1 g:d of gold =19.3g/cm^3)?

Answer 1

@Loser66

Answer 2

So what I did for part A is I took SA=4pir^2 and solve for r to obtain large radius

Answer 3

@bibby