TEST & Webassign 2/14

Please remember to study for the Big Quiz (small test) “Quest” on Mole Conversions, Empirical and Molecular Formulas on Thursday Feb 14th. You have a “Quest” review that were covered in class on Tuesday. The “quest” will be worth 50 points.

Thursday Night (before midnight) you have TWO webassigns that are due! One is mole conversions only and the second one is for Empirical Formulas. Recall that sometimes there is NO subscript of ONE. Any mole ratios that end in 0.5, 1.5, 2.5 or 3.5 will need to be doubled (that’s every subscript doubled). If you have a mole ratio with any element ending in .33, 1.33, or 1.66 then you will need to multiply every subscript by 3. This will give you a small whole number ratio for the formula. Examples are Al2O3, N2O5, Na2Cr2O7, Au3O4. You have had about 40-50 minutes of class time to complete these webassigns, so there should be no excuse for not having them done on time.