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Chapter 7 - Stoichiometry Calcs1.) Given the reaction: Fe 2 O 3 + 3CO → 2Fe + 3CO 2If you start with 4.50 moles of iron (III) oxide, and 12.2 moles of carbon monoxide, howmany grams of iron would be formed? If 402 g of iron are collected, what is the percentyield?2.) Given the reaction: WO 3 + 3H 2 → W + 3H 2 OIf you start with 53.2 g of tungsten oxide and 3.02 g of hydrogen, how many grams of waterare formed? How many grams of tungsten are formed? How much excess reactant is left?3.) Given the reaction 2C 4 H 10 + 13O 2 → 8CO 2 + 10 H 2 OHow many grams of butane (C 4 H 10 ) are required in order to form 56.0 g of carbon dioxide?4.) Using the reaction from #3,If 60.0 g of butane reacts with 243 g of oxygen and forms 72.5 g of water, what is the percentyield?5.) Given the reaction: 2C 8 H 18 + 25O 2 → 16CO 2 + 18H 2 O ∆H rxn = -10,160 KJIf 200.0 g of octane (C 8 H 18 ) are mixed with 634 g of oxygen, how many moles of carbondioxide would be created? Determine the amount of energy change in the reaction.Chapter 10 - Gas Law Calcs1.) If 127 g of Cl 2 gas at 2.25 atm occupies 36.5 L, what is the temperature in degrees celsius?2.) A 5.00 X 10 4 L container contains 1.25 X 10 5 g of methane gas (CH 4 ) at –15.0 o C, what is thepressure in the container (give the pressure in both atmospheres and torr)?3.) A gas at 125 o C and 1125 torr occupies 25.0 L. If the gas is compressed to a volume of 11.5L pressure of 6.50 X 10 3 torr, what is the new temperature of the gas?4.) A gas at –50.0 o C and 0.950 atm occupies 67.8 L. If the temperature is raised to 50.0 o C, andthe volume is decreased to 35.0 L, what is the new pressure of the gas?5.) How much space would 35.0 mol of argon gas occupy at STP?6.) Determine the number of moles of propane gas (C 3 H 8 ) that an 825 L container at STP wouldcontain. Determine the mass of the propane in the container.7.) A 4.75 L container contains carbon dioxide and krypton. The partial pressure of krypton is945 torr, and the total pressure is 1985 torr. The temperature inside the container is –15.0 o CDetermine the number of moles of each gas, and the mass of each gas. (Hint: rememberDalton’s Law of partial pressures)

8.) A 45.0 L container can only withstand a pressure of 11.5 atm. If the container contains 275 gof O 2 gas and 125 g of N 2 gas at a temperature of 250 o C, will the container explode (Hint:remember Dalton’s Law of partial pressures)9.) What is the molar mass of a 12.75 g gas sample that occupies 1.520 L at 57.0 o C and 950torr?10.) How many grams of carbon dioxide would be formed by the reaction of 25.0 L of butane(C 4 H 10 ) at a pressure of 3.65 atm and a temperature of 225 o C?2 C 4 H 10 (g) + 13 O 2 (g) → 8 CO 2 (g) + 10 H 2 O (g)11.) How many liters of water would be formed by the reaction of 65.8 L of oxygen at STP?2 H 2 (g) + O 2 (g) → 2 H 2 O (g)Chapter 11 – Liquids and Solids Calcs1.) Determine the energy change when 68.0 g of carbon tetrachloride (CCl 4 ) is heated from18.0 o C to 43.0 o C. (C = 0.862 J/g o C)2.) A 497 g graphite (C) sample gives off 13.4 KJ of heat as it is cooled. If the initial temperatureof the graphite was 72.5 o C, what is the final temperature? (C = 0.711 J/g o C)3.) A student doing a calorimetric experiment collected the following data:T metal = -80.65 o C m metal = 31.45 g T water = 4.09 o C m water =136.25 gDetermine the specific heat of the metal.4.) Determine the energy change when 145 g of steam at 212.0 o C is cooled to water at 21.0 o C.5.) Determine the energy change when 52.0 g of ice at 0.0 o C is heated to steam at 100.0 o C.6.) Determine the energy change when 52.0 g of ice at –45.0 o C is heated to water at 55.0 o C.