## calculate mass from molar ratio

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hai
Newbie Posts: 1
Joined: Fri Oct 22, 2021 2:53 am

### calculate mass from molar ratio

Hi all

I somehow forgot the basics of m, n, and M conversions!
In x + y = xy
We have a molar ratio of x:y = 5. I know the molar masses of both compounds.
If we have 100g of xy - how to get the masses of x and y separately?
ChenBeier
Distinguished Member Posts: 974
Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

### Re: calculate mass from molar ratio

Basic is n= m/M

If you know molar Mass M of XY then you can calculate n the moles of XY for a given mass m of 100 g and the equation reqires each component also 1 then m of X and Y also known.
If ratio X/Y = 5 then X = 5*Y but not necessary.