1. THURSDAY 3/27/14 MOLE-PARTICLE & MOLE- VOLUME CONVERSIONS

2. MOLES AND ATOMS/MOLECULES Avogadro’s Number (6.02x10 23 particles/mol) allows us to convert between moles and atoms/molecules We use the unit “atoms” when we have individual atoms (H, He, C, N, etc.) and “molecules” when we have more than one atom (H 2, CO 2, Li 2 O, etc.)

3. EXAMPLE: MOLE-PARTICLE How many atoms are in 5.59mol calcium?

4. MOLES OF GAS AND VOLUME Avogadro said that one mole of gas at standard temperature and pressure (STP) take up 22.4L http://www.youtube.com/watch?v=CKs4WKv6foI&f eature=relmfu http://www.youtube.com/watch?v=CKs4WKv6foI&f eature=relmfu We can easily convert between moles and liters.

5. EXAMPLE: MOLE-VOLUME How many moles of CH 4 are contained in 17.2L?

6. YOUR JOB Complete the mixed stoichiometry worksheet Mini-Quiz when 10 minutes of class left! (gram-mole)