CHEMISTRY: I was really impressed today with the progress you’ve made on mastering percent composition and empirical formulas! Now it’s time to move on to molecular formulas!
Remember what molecular formulas are – just a multiple of the empirical formula. Keep that concept in mind, and you’ll have no problem remembering to divide the molecular formula mass by the empirical formula mass to find X! Easy peasy!
HW UPDATE: Yes! I do want you to do all of the homework for Monday night, even though you’ve done a few of these already. However, you don’t have to do them again for Wednesday’s homework. Also, be sure and bring at least two STEM articles to class on Friday for the Science In the News assignment. This is a regular SItN assignment, but you can also do two extra for extra credit.
Are you starting to catch on to the steps? It will be good for you to memorize them, but would it not be just tons better to understand why you need each step – backwards and forwards, so then you wouldn’t need to memorize them at all!
Chemistry 11-28-16 Molecular Formulas from Tammy Skinner on Vimeo.
