If anyone could tell me how to do this, that would be great. Have been looking at 2014 HL Q1 in particular and really confused on how they figured out the gl1 of the anhydrous bit. Thanks :)

Saldrock
Good luck

seamus.breathnach.9
Hey sarah, when finding the Mr of Sodium carbonate you actually include the water, making the total Mr 106. and hence,
106 X 0.0432 (Moles per litre of sodium carbonate) = 4.6g/l1

Sarah18
Thanks so much!! :)

Kayli smyth
this is the maths thing I absolutely cant do. Does anyone have examples

Sarah18
Hope that helps :)

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