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Topic: Mole concept and Avogadro's number?  (Read 2424 times)

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Offline CousinItt

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Mole concept and Avogadro's number?
« on: September 28, 2008, 10:07:55 AM »
A sample of phosphoric acid contains 1.2 x 10^23 molecules.

a) How many atoms of phosphorus will there be?

b) How many atoms of hydrogen will it contain?
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Offline Astrokel

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Re: Mole concept and Avogadro's number?
« Reply #1 on: September 28, 2008, 10:23:54 AM »
hey!

you need to show some work so we could help you out!

a&b) What is the chemical formula of phosphoric acid? 1 molecule of phosphoric acid contains how many phosphorus atoms? Therefore how many phosphorus atom in 1.2 x 10^23 molecules of phosphoric acid?



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