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i think calculator does round up because when you put in 19e^-0.5*51 it equals a very small number but then you add 1 and it equals 1

Oh okay, thanks! I guess I should also adapt to the newer version though.

So my teacher told me that the way to name alkanols changed around 2 years ago and now instead of 2-pentanol we HAVE to write it as pentan-2-ol or we lose marks. Is that true or can we still write it any way?