# empiricial formula

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#1
how would i begin with this?
Last edited by shreya_2003; 1 month ago
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1 month ago
#2
(Original post by shreya_2003)
how would i begin with this?
Work out mol Pb
Work out mol O
get simplest ratio
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#3
(Original post by charco)
Work out mol Pb
Work out mol O
get simplest ratio
How do i get the mass of the O?
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1 month ago
#4
(Original post by shreya_2003)
How do i get the mass of the O?
To get the mass of the oxygen do the mass of the dish + lead oxide subtracted by mass of the dish + lead.
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#5
(Original post by sweetescobar)
To get the mass of the oxygen do the mass of the dish + lead oxide subtracted by mass of the dish + lead.
I got pb mass 3.132 and O as 0.322
then the mol of pb as 0.0151 and O as 0.020125
then Pb-1 and O 1.3 i think i did something wrong
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1 month ago
#6
(Original post by shreya_2003)
I got pb mass 3.132 and O as 0.322
then the mol of pb as 0.0151 and O as 0.020125
then Pb-1 and O 1.3 i think i did something wrong
That seems to be correct, I think all you have to do now is get the oxygen to a whole number. By x by 10, but I don't know, I feel like there' something weird.
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#7
(Original post by sweetescobar)
That seems to be correct, I think all you have to do now is get the oxygen to a whole number. By x by 10, but I don't know, I feel like there' something weird.
Oh nevermind i got the answer now! Thank you
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1 month ago
#8
Wait what is it
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#9
(Original post by sweetescobar)
Wait what is it
Pb3O4 bc the o was 1.33
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1 month ago
#10
Ah yes, I orginially did that, but because it was not exactly 4 I had did something else.
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1 month ago
#11
look here it shows you how to do it, it may help!
https://www.science-revision.co.uk/m...20formula.html
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