1 / 5

March 6, 2012

March 6, 2012. AGENDA: 1 – Bell Ringer & Part. Log 2 – Intro: Weekly Raffle! 3 – Review Homework 4 – CN: The Mole and Molar Mass. Today’s Goal: Students will be able to calculate molar mass. Homework Calculating Molar Mass Friday is the Last Day to turn in Last Week’s Work.

eagan
Download Presentation

March 6, 2012

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. March 6, 2012 AGENDA: 1 – Bell Ringer & Part. Log 2 – Intro: Weekly Raffle! 3 – Review Homework 4 – CN: The Mole and Molar Mass Today’s Goal: Students will be able to calculate molar mass. Homework • Calculating Molar Mass • Friday is the Last Day to turn in Last Week’s Work

  2. Cornell Notes • Topic: The Mole and Molar Mass • Date: 3/6/2012 • A mole is a quantity used to measure the amount of matter present. • Like a dozen = 12 • A mole = 6.02 x 1023 • A dozen doughnuts = 12 doughnuts • A mole of carbon = 6.02 x 1023 atoms (particles) of C What is the mole and how is it defined?

  3. Cornell Notes (continued) What is molar mass? • Since the mole is always the same number, a mole of different elements or compounds will have different masses. • The mass of 1 mole was defined by Carbon-12. • 1 mole of carbon = 12 g 1 mol • 6.02 x 1023 atoms carbon = 12 g

  4. Cornell Notes (continued) How do you calculate molar mass? • Determine types of atoms in a compound. • Find their atomic masses. • Sum all masses! Units = g / mol

  5. Practice Problems (Left Side) NaCl = Na = Cl = 58.5 g 1 mol Ag = 107.9 g 1 mol LiNO3 = Li = N = 3 x O = 68.9 g 1 mol 23.0 6.9 35.5 14.0 + + (3x16.0)

More Related