owais_148
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how do you find out the mass of one mole of a substance?
thanks
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sqrt of 5
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Have you got the full question?
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BobbJo
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(Original post by owais_148)
how do you find out the mass of one mole of a substance?
thanks
Read the relative atomic masses from the periodic table
Add the relative atomic masses
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owais_148
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Thanks
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boom2003b
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The equation you would use is moles = mass/mr
so you said one mole of a substance so 1=mass/mr
Mr can be found by using the periodic table using the atomic mass of the element.
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Luhemnarik
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Moles = mass/ RFM

So:
Mass = moles * RFM

If it is 1 mole, then the mass is just the relative formula mass of the substance in grams.
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boom2003b
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For example if the substance is sulfuric acid (H2SO4
then the mr is 2+16+8+8+8+8 which equals 50
So the mass of one mole of sulfuric acid is moles = mass/mr 1 =mass/50 so 50 times 1 = 50
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boom2003b
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So basically the mr of the substance is the mass of one mole of the substance
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