1 / 18

Section 3.1 The Mole and Molar Mass

Section 3.1 The Mole and Molar Mass. In this section… Connecting the atomic and real worlds The mole Elemental molar mass Compound molar mass Conversions between atoms, moles, and mass. The Mole and Molar Mass. How do we relate atoms and molecules to the real world?.

joella
Download Presentation

Section 3.1 The Mole and Molar Mass

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Section 3.1 The Mole and Molar Mass

  2. In this section… • Connecting the atomic and real worlds • The mole • Elemental molar mass • Compound molar mass • Conversions between atoms, moles, and mass The Mole and Molar Mass

  3. How do we relate atoms and molecules to the real world? 1 “mole” of atoms or molecules fills a small handful.

  4. 1 mole = 6.02 x 1023 atoms or molecules 1 mole of Cu, Al, S, K2Cr2O7, H2O and CuCl22H2O

  5. 1 mole = 6.02 x 1023 atoms or molecules 1 mole of elements Cu, Al, S,

  6. 1 mole = 6.02 x 1023 atoms or molecules 1 mole compounds K2Cr2O7, H2O and CuCl22H2O

  7. 1 mol element = 6.02 x 1023 atoms of that element The mole as a conversion factor

  8. 1 mol element = 6.02 x 1023 atoms of that element The mole as a conversion factor moles atoms 1.95 mol Al atoms moles 4.68 x 1023 Cu atoms

  9. 1 mol element = 6.02 x 1023 atoms of that element The mole as a conversion factor moles atoms When doing these calculations, does it matter which element is used? atoms moles

  10. elemental molar mass = mass of 6.02 x 1023 atoms elemental molar mass = atomic weight on periodic table, in grams per mole Elemental molar mass

  11. Molar mass 1 mol Al = 1 mol F =

  12. 1 mol Al = molar mass Al = 26.98 g Al Molar mass as a conversion factor moles grams 1.95 mol Al 1.95 mol Al

  13. 1 mol Cu = molar mass Cu = 63.55 g Cu Molar mass as a conversion factor grams moles 49.4 g Cu 49.4 g Cu

  14. compound molar mass = mass of 6.02 x 1023 molecules compound molar mass = sum of atomic weights of atoms in the molecule Compound molar mass SO2

  15. Step 1. Determine molar mass Step 2. Use molar mass as a conversion factor Converting between grams and moles for a compound

  16. SO2 = 64.06 g/mol moles grams What is the mass of a 1.45 mol sample of SO2? Molar mass as a conversion factor grams moles What amount, in moles, of SO2 does a 212-g sample represent?

  17. How many oxygen atoms are present in a 212-g sample of SO2? Problem Map: Multistep Problems

More Related