CHEM 107 Lecture Notes - Lecture 20: Nitrogen Dioxide, Smog, Aspirin

• School: CSU
• Department: Chemistry
• Course: CHEM 107
• Professor: Mallory Monique Mentele

Document Summary

The mass (in grams) of one mole of its atoms. You can always convert between moles and atoms/molecules. To get from atoms or molecules to moles . To get from moles to atoms or molecules . 5. 0g ca / 40. 08g = 0. 12 mol ca. More practice: graphite is the crystalline form of carbon used in pencils. 0. 315 g c x (1mol c/12. 01g c) = 0. 0262 mol c: aspirin, whose chemical name is acetylsalicylic acid, has the molecular formula of. 0. 002775 x 6. 022 x 1023 = 1. 67 x 1021: nitrogen dioxide is a component of urban smog that forms from the gases in car exhausts. 8. 92/46. 01 = 0. 19387 mol x 6. 022 x 1023. 133,000 / 63. 55 = 2,092. 8403 mol x 6. 022 x 1023. You are finding the number of si atoms, that"s all there is. How many molecules are in 0. 1 mol of no2.