November 27, 2015

Homework Help: physics problem!!

Posted by boom on Tuesday, April 9, 2013 at 7:22am.

If the water molecules in 5.70 g of water (H2O) were distributed uniformly over the surface of the Earth, how many such molecules would there be on 1.40 cm2 of the Earth's surface?
-Molar mass Hydrogen gas(H2)=2.02 g/mol
-Molar mass Oxygen gas (O2) = 32.0 g/mol
-Radius of Earth = 6370 km
-Avogadro's number = 6.02 กม 1023 particles/mol
Thanks in advance !!

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