Stoichiometry Mole-to-Mole:

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Stoichiometry Mole-to-Mole: How many moles of water are produced when 3.5 moles of oxygen react with propane? C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g)

Stoichiometry Mole-to-Mole: How many moles of water are produced when 3.5 moles of oxygen react with propane? C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) ? mol

Stoichiometry Mole-to-Mole: How many moles of water are produced when 3.5 moles of oxygen react with propane? C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) ? mol 3.5 mol

Stoichiometry Mole-to-Mole: How many moles of water are produced when 3.5 moles of oxygen react with propane? C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) = ? mol 3.5 mol 5.0 mol 4.0 mol X = = 2.8 mol H2O Does it make sense?

Stoichiometry Mole-to Mass: Calculate the mass of hydrogen produced when 2.7 moles of potassium react with water. 2 K(s) + 2 H2O(l) → 2 KOH(s) + H2(g)

Stoichiometry Mole-to Mass: Calculate the mass of hydrogen produced when 2.7 moles of potassium react with water. 2 K(s) + 2 H2O(l) → 2 KOH(s) + H2(g) ? (g)

Stoichiometry Mole-to Mass: Calculate the mass of hydrogen produced when 2.7 moles of potassium react with water. ? g 2 K(s) + 2 H2O(l) → 2 KOH(s) + H2(g) 2.7 mol 2.0 mol 2.02 g = X = = 2.7 g H2 Does it make sense?

Stoichiometry Mass-to-Mass: Determine the mass of carbon dioxide produced when 54.75 g of hydrochloric acid react with calcium carbonate. CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)

Stoichiometry Mass-to-Mass: Determine the mass of carbon dioxide produced when 54.75 g of hydrochloric acid react with calcium carbonate. CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g) ? g 54.75 g 2 (36.46) g 44.01 g = 33.04 g CO2 X = = Does it make sense?

Class discussion (Practice): 1) How many moles of CO2 are produced when 2.5 moles of oxygen react with propane? C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g)

Class discussion (Practice): 1) How many moles of CO2 are produced when 2.5 moles of oxygen react with propane? C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) 2.5 mol ? mol 5.0 mol 3.0 mol = = 1.5 mol CO2 X = Does it make sense?

2) Calculate the mass of water required to react with 2 2) Calculate the mass of water required to react with 2.7 moles of potassium. 2 K(s) + 2 H2O(l) → 2 KOH(s) + H2(g)

2 K(s) + 2 H2O(l) → 2 KOH(s) + H2(g) 2) Calculate the mass of water required to react with 2.7 moles of potassium. 2 K(s) + 2 H2O(l) → 2 KOH(s) + H2(g) 2.7 mol ? g 2.0 mol 2(18.02) g = X = = 49 g H2O Does it make sense?

2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g) 3) How many grams of CO2 are produced when 78.0 g of C2H2 burns? 2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g)

2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g) 3) How many grams of CO2 are produced when 78.0 g of C2H2 burns? 2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g) 78.0 g ? g 4(44.01) g 2(26.04) g = 264 g CO2 X = = Does it make sense?