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Topic: need help chemical formulas  (Read 3642 times)

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Offline PanthersNHL7

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need help chemical formulas
« on: February 12, 2007, 10:36:23 PM »
in the molecular formula C7H5(NO2)3, how many atoms are present in a sample of 2.0 x 10^23 molecules?
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Offline Borek

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Re: need help chemical formulas
« Reply #1 on: February 12, 2007, 10:55:39 PM »
How many atoms in molecule?
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Offline coach32

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Re: need help chemical formulas
« Reply #2 on: February 14, 2007, 12:06:23 PM »
Quote from: PanthersNHL7 on February 12, 2007, 10:36:23 PM
in the molecular formula C7H5(NO2)3, how many atoms are present in a sample of 2.0 x 10^23 molecules?

count the number of atoms (21) in you compound and multiple by you sample size (2.0 x 1023.
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