CH 3 - notes 1 - atomic mass moles

CH 3 - notes 1 - atomic mass moles - AP chem OMalley Text:...

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AP chem – O’Malley Chapter 3 – stoichiometry 1 Name: ____________________ Text: p 77 – 88 (3.1 – 3.4) (atomic mass & moles) © S. O’Malley 2011 Atomic masses are the ______________________________ of naturally occurring ______________________. 3.1 Find the atomic mass of Cu given: 69.09% 63 Cu (62.93) 30.91% 65 Cu (64.93) EX Find the % of each isotope given: 6 Li = 6.0151 amu 7 Li = 7.0160 amu Li = 6.941 amu A mole is the number of atoms in exactly _____________ of 12 C. A mole of substance has a mass equal to its __________________________ in grams. EX Find the molar mass of each of the following compounds: C 12 H 22 O 11 CaCO 3 CuSO 4 · 5H 2 O MOLE CONVERSIONS 3.2 How many grams are in six atoms of Am ? 3.3 How many atoms are in 10.0 g of Al? 3.4 How many atoms are in a 5.68 mg silicon chip?
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Problems taken from Zumdahl, 7 th ed. HOMEWORK (CH 3 – part 1)
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CH 3 - notes 1 - atomic mass moles - AP chem OMalley Text:...

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