Earth's oceans have an average depth of 3800 m, a total area of 3.63 × 108 km2, and an average concentration of dissolved gold of 5.8 × 10−9 g/L. How many grams of gold are in the oceans?

Answer:grams of gold=8x10^12 gStep-by-step explanation: first we calculate the volume of the ocean this is achieved by multiplying the area by the depthA=3.63x10^8  km^2=3.63x10^14   m^2V=AxLV=3.63x10^14 x 3800=1.3797x10^18m^3=1.3797x10^21L then we multiply the volume in liters by the concentration of gold in the ocean per litergrams of gold=1.3797x10^21   x    5.8x10^-9=8x10^12 g