9.5 Measuring Masses of Reactants
SUMMARY
This video lesson is one of the most difficult to understand video lesson in this entire series. Perk up and follow very carefully as the concept of formula mass is presented and applied to chemical reactions. Duration: 7:05.
VIDEO CHECK QUESTIONS
9.5a Which has more atoms: 12 grams of carbon or 32 grams of diatomic oxygen?
9.5b Which has more particles, where a particle is either an atom or a molecule: 12 grams of carbon or 32 grams of diatomic oxygen?
9.5c What is true about the number of molecules in 44 grams of carbon dioxide and 32 grams of diatomic oxygen?
All video check questions can be downloaded from the EXTRAs menu.