Melina H.

asked • 02/13/17

How do you write there are 33,400,000,000,000,000,000,000 in 1 gram of water in scientific notation?

I'm really not sure how to do this, especially with the (in 1 gram of water part)

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Mark M. answered • 02/13/17

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3.34 x 1022
 
Nothing to do to the 1gm
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Arturo O.

If you have 1 gm of H2O and given the molecular weight of H2O is 18.00, then you have 1/18.00 moles of water.  At 6.02 x 1023 molecules in a mole, you then have about 3.44 x 1022 water molecules in 1 gram of water.  The problem statement should have said
 
"... 33,400,000,000,000,000,000,000 water molecules in 1 gram of water ... " 
 
 
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02/13/17

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