Answer:
The total amount of Au is $

Step-by-step explanation:
Given that,
Mass of 1.0 ml of Au
Total volume of water in oceans

We need to calculate the volume in ml
Using given volume


We need to calculate the total mass of Au
Using given data


So, The total mass of Au is

The mass will be in ounce,


The total amount of the Au Will be


Hence, The total amount of Au is $
