Video Midterm Question #2

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vidish
Posts: 13
Joined: Fri Sep 25, 2015 3:00 am

Video Midterm Question #2

Postby vidish » Fri Nov 27, 2015 6:21 am

The Empirical formula on the midterm solved step by step.
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Chem_Mod
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Re: Video Midterm Question #2

Postby Chem_Mod » Fri Nov 27, 2015 10:52 am

Great video!

Make sure that you use the exact molar masses given on the periodic table for the exams (as well as the exact constants). For example, the periodic table lists oxygen's molar mass as 15.9994 g/mol, not 16 g/mol. The approximation was fine in this problem as you were calculating an empirical formula, but you could run into rounding issues in problems that require a numerical answer.

vidish
Posts: 13
Joined: Fri Sep 25, 2015 3:00 am

Re: Video Midterm Question #2

Postby vidish » Sat Nov 28, 2015 10:31 am

Thank you so much, will take care of that during the exam.


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