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Topic: How many atoms are in 100g of phosphorus vapour  (Read 399 times)

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Offline Rogue

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How many atoms are in 100g of phosphorus vapour
« on: January 14, 2024, 07:48:49 AM »
I got this question during my exam today and i was so confused what i fid did was was get the number of moles which turned out to be 0.803(100÷31×4) and multiplied it by Avogadro's number. Is this right it turmed out to be smth like 4.45×10^23 or 24
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Offline Hunter2

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Re: How many atoms are in 100g of phosphorus vapour
« Reply #1 on: January 14, 2024, 08:05:59 AM »
4,85  * 10^23 is correct.
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Offline mjc123

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Re: How many atoms are in 100g of phosphorus vapour
« Reply #2 on: January 16, 2024, 05:02:48 PM »
That's wrong if the question was how many atoms - not how many P4 molecules.
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Offline Hunter2

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Re: How many atoms are in 100g of phosphorus vapour
« Reply #3 on: January 16, 2024, 05:05:08 PM »
Yes you are right.
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