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Question 22 on the post assessment for Empirical Formulas

Posted: Wed Oct 03, 2018 6:43 pm
by CateJensen3K
I am confused as to why C5H12O5 would be the Molecular Formula. I thought that would be the Empirical Formula?

Re: Question 22 on the post assessment for Empirical Formulas

Posted: Wed Oct 03, 2018 6:49 pm
by Reva Kakaria 1J
The molar mass of the molecular formula Xylitol is given as 152.15, and when you add up all the molar masses of C5H12O5, you get the same number, which means that it's the molecular formula. In this case the molecular formula is also the empirical formula, since the amounts of each element are already in the lowest possible ratio. I hope this helps!

Re: Question 22 on the post assessment for Empirical Formulas

Posted: Wed Oct 03, 2018 6:52 pm
by CateJensen3K
I completely forgot that they could be the same, thank you!