Warm-Up How many molecules are in 5.78 mol of ammonium nitrate?

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Presentation transcript:

Warm-Up How many molecules are in 5.78 mol of ammonium nitrate? What is the volume (in liters) of 835 g of SO3 gas at STP?

Stoichiometry

Stoichiometry The relationship between the relative quantities of substances in a chemical reaction. Example: N2H4 + 2 H2O2  N2 + 4 H2O Mole Ratio: 1 mol N2H4 = 2 mol H2O2 = 1 mol N2 = 4 mol H2O

Practice Problem 1 How many liters of oxygen gas are necessary for the combustion of 340.0 g of ethanol (C2H5OH)? The balanced equation is: C2H5OH + 3 O2  2 CO2 + 3 H2O

Practice Problem 2 What volume of hydrogen gas, when combined with nitrogen gas, is necessary to produce 16.0 L of ammonia gas (NH3)?

Practice Problem 3 How many moles of bromine gas are produced when fluorine reacts with 347.5 g of potassium bromide?

Practice Problem 4 In a thermite reaction, powdered aluminum reacts with iron (III) oxide to produce aluminum oxide and molten iron. What mass of aluminum oxide is produced when 2.3 g of aluminum reacts with iron (III) oxide?