Posted by **Anonymous** on Sunday, August 25, 2013 at 4:42pm.

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.

(a) How many grams of gold are in the oceans?

(b) How many cubic meters of gold are in the oceans?

Assuming the price of gold is $392.00/troy oz, what is the value of gold in the oceans (1 troy oz = 31.1 g; d of gold = 19.3 g/cm3)?

AND

Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter = 6.304 10-3 in) can be produced from the copper in 5.09 lb of covellite, an ore of copper that is 66% copper by mass? (Hint: Treat the wire as a cylinder: V of cylinder = πr2h; d of copper = 8.95 g/cm3.)

## Answer This Question

## Related Questions

- Chemistry - A cublic meter of ocean water contains 6x10^-5 g of gold. If the ...
- College Chemistry/Lab Math - I think I have this problem figured out correctly, ...
- Physical Science - Suppose an all good crown has mass m=3800 grams. Gold has a ...
- Algebra - The purity of gold is measured in karats. Twenty-four karat gold is ...
- algebra - A goldsmith has two gold alloys. The first alloy is 30% gold; the ...
- College Algebra - Chemistry - A goldsmith has two gold alloys. The first alloy ...
- Algebra 2 - The purity of gold is measured in karats. Twenty-four karat gold is ...
- Chemistry - I am trying to figure out how much 1.134 grams worth of gold will ...
- Algebra 1 - Earth has a radius of about 6.4 x 10 to the 6th power m. Approximate...
- Chemistry - A 45.4 grams of a gold metal sample was heated with the amount of ...

More Related Questions