2. Stoichiometry 9.1

3. Stoichiometry Composition stoichiometry – deals with the ______ relationships in _______________. Reaction stoichiometry – involves the mass _____________ between _________ and _________ in a _________ reaction.

4. Types already covered – Don’t Copy Mass – Moles and vice versa Mole – digits and vice versa Still need to be covered/pertaining to reactions Mole – mole and vice versa Mass – mole and vice versa Mass – mass and vice versa Mass – digits and vice versa Mass – volume and vice versa

5. Previous types of problems How many atoms are present in 2.5 mol of zinc? Determine the mass in grams of 3.50 mol of copper. How many atoms are present in 100 grams of silver?

6. A Problem If you have 2.4 moles of NH 3, how many moles of oxygen are needed to consume all NH 3 ? Need a balanced reaction You must use units

7. Mass-Mass Stoichiometry If you have 450g of isoamyl alcohol (C 5 H 11 OH), how many grams of C 2 H 3 O 2 C 5 H 11 do you have? grams of A  moles of A  moles of B  grams of B

8. Mass-Mass If you solve in a stepwise manner, don’t round until the end. How much (g) water needs to be added to react with 8.1 g of Mg? What mass of tin(II) fluoride can be made from 55.0 g of HF if there is enough tin present?

9. Mole-Mass How much (grams) glucose is used with 1.03 x 10 -2 mol oxygen? What is the mass of CO 2 produced from the above problem? Mass of H 2 O?

10. Density and Stoichiometry What volume of water is produced from 20.0 mol of CO 2 if an excess of LiOH is present? (Density of water is 1.00 g/mL) D = mass/volume What is the mass of LiOH used to obtain 1.5 L of water?