Converting moles to the number of atoms

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Converting moles to the number of atoms

Consider these questions: How many oxygen atoms in each representative particle? CaCO3 Al2(SO4)3 How many ions in the following? CaCl2 NaOH 3 atoms of oxygen 12 (3 x 4) atoms of oxygen 3 total ions (1 Ca2+ ion and 2 Cl1- ions) 2 total ions (1 Na1+ ion and 1 OH1- ion) 5 total ions (2 Al3+ + 3 SO42- ions)

Practice problems page 292

Pg 292 sample problem Propane is a gas used for cooking and heating. How many atoms are in 2.12 mol of propane (C3H8)?

Independently you will complete Q5 and Q6 on page 292

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