Section 3: Calculating the RMM

If you know the number of moles and the mass of a component present, you can calculate the RMM of the component.




What is the RMM - to one decimal place - of Salbutamol Base, if 0.7 moles of Salbutamol Base weighs 167.51 grams?

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The RMM of Salbutamol Base is 239.3.

Number of Moles =  Mass of Component  
RMM

which rearranges to:

RMM =    Mass of Component   
Number of Moles

RMM of Salbutamol Base =    167.51   
0.7

RMM of Salbutamol Base = 239.31

RMM of Salbutamol Base = 239.3 to one decimal place

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