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Do you apply sig figs to your final answer or every time you get a value? For instance, if I'm trying to find how many molecules of glucose there are in 63.5g, do I divide it by 120g/m (molar mass), round that number to 3 sig figs, then multiply by avagadro's number, then round the final answer to 3 sig figs again? Or do I just divide 63.5g by 120g/m, don't round that number, multiply by avagadro's number, then only round the the final answer to 3 sig figs?
Hii!! I used to be confused about this also, but here's what I think. When you use sig figs, I believe that you only apply it to the final answer because if you keep applying it to every value you get, the final answer may not be as accurate.
I agree with what everyone else has answered. Sig figs should only be applied to your final answer, this way your final answer can be the most accurate. If you were to apply sig figs to every calculation, you would be doing a lot of unnecessary rounding that could change the final answer pretty significantly.
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