T H U R S DAY 3 / 2 7 / 1 4

MOLE-PARTICLE & MOLE- VOLUME CONVERSIONS

MOLES AND ATOMS/MOLECULES

• Avogadro’s Number (6.02x1023 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 (H2, CO2, Li2O, etc.)

EXAMPLE: MOLE-PARTICLE

• How many atoms are in 5.59mol calcium?

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&feature=relmfu

• We can easily convert between moles and liters.

EXAMPLE: MOLE-VOLUME

• How many moles of CH4 are contained in 17.2L?

YOUR JOB

• Complete the mixed stoichiometry worksheet

• Mini-Quiz when 10 minutes of class left! (gram-mole)