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Announcements

Announcements. Prelaboratory Assignment due at the beginning of lab tomorrow (pg. 42 of lab book). Proper dress required for lab! Online HW 4 (Type II) due tomorrow by 7:00pm. Online HW 5 (Type I) due Monday 10 /21 and (Type II) due Wednesday 10 /23. Clicker #1.

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Announcements

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  1. Announcements • Prelaboratory Assignment due at the beginning of lab tomorrow (pg. 42 of lab book). • Proper dress required for lab! • Online HW 4 (Type II) due tomorrow by 7:00pm. • Online HW 5 (Type I) due Monday 10/21 and (Type II) due Wednesday 10/23.

  2. Clicker #1 When comparing what you’re given to a balanced chemical equation, you must be in units of A) moles B) grams C) molarity D) atm E) Any unit can be directly related to a balanced chemical equation.

  3. Mass Limiting reactant Molar mass Calculate amount of product MOLES! Volume (Solution) Molarity (# of particles) Ideal gas law Balance equations Gas Properties (P, V, T)

  4. Which of the following reaction mixtures would produce the greatest amount of product, assuming all went to completion? Each involves the reaction symbolized by the equation: N2(g) + 3H2(g) → 2NH3(g) A) 3 moles of N2 and 3 moles of H2 B) 1 mole of N2 and 6 moles of H2 C) 1 mole of N2 and 3 moles of H2 D) Each would produce the same amount of product. 2 mol NH3 2 mol NH3 2 mol NH3 Clicker #2

  5. Example #1 • If 15.0 mg of P2O5 was produced in this reaction, what masses of P4 and KClO3 were required?

  6. Example #2 • Assume you have 5.00 g of Mg and 10.0 g of CO2 available. You allow them to react. Prove that mass has been conserved.

  7. Clicker #3 What should be the total mass present after the reaction is complete? A) 1.24 g B) 5.00 g C) 9.54 g D) 10.0 g E) 15.0 g

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