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# Equation help watch

1. hi there,
I've rececntly done titrations of a solid using two different methods and my aim of these are to find out how pure a sample of the solid actually is. To work out the calculations i've worked out how many moles of the solution titrated reacted with the solid (solid dissolved in another liquid) (in a 1:1 ratio this means that many moles of aspirin reacted) and also how many moles of solid I put in (mass/molecular mass).

I just want to make sure that I am doing the last little bit right. to find out the percentage, I divided the solid that reacted (smalller number) by the solid I started with (bigger number) and x100.
Can I do this for an answer?
2. Yea, just do mass of what actually reacted divided by the starting mass then times by 100.
3. thanks It seemed too simple

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Updated: March 26, 2011
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