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Topic: How many moles  (Read 502 times)

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Offline ScienceGeek2005

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How many moles
« on: February 07, 2024, 01:24:38 PM »
How many moles of Fe3+ are contained in 5.00 mL of a solution of 0.200 M Fe(NO3)3
note: for every 1 mole of Fe(NO3)3

And

How many moles of SCN- (thiocyanate ion) are contained in 1.00 mL of a solution of 2.00x103-M KSCN? (note: for every 1 mole of KSCN, there is 1 mole of SCN-)

I know these are simple but for the life of me I can’t seem to wrap my head around these two question to get the write amount

-thank you in advance!


Offline Borek

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Re: How many moles
« Reply #1 on: February 07, 2024, 01:43:08 PM »
Just start with the molar concentration definition and rearrange the formula to solve for n.

Then it is just plug and chug (you will need to convert mL to L though).
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