Density of a Gas at STP Lesson # 4.

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Density of a Gas at STP Lesson # 4

1. Calculate the density of N2 at STP. Calculate Density = grams litre Assume that you have 1 mole of N2

1. Calculate the density of N2 at STP. Calculate Density = grams litre 28.0 g = Assume that you have 1 mole of N2

1. Calculate the density of N2 at STP. Calculate Density = grams litre 28.0 g = 22.4 L Assume that you have 1 mole of N2

1. Calculate the density of N2 at STP. Calculate Density = grams litre 28.0 g = 1.25 g/L 22.4 L Assume that you have 1 mole of N2

2. Calculate the density of CO2 at STP. Density = grams litre Assume that you have 1 mole of CO2

2. Calculate the density of CO2 at STP. Calculate Density = grams litre 44.0 g = Assume that you have 1 mole of CO2

2. Calculate the density of CO2 at STP. Calculate Density = grams litre 44.0 g = 22.4 L Assume that you have 1 mole of CO2

2. Calculate the density of CO2 at STP. Calculate Density = grams litre 44.0 g = 1.96 g/L 22.4 L Assume that you have 1 mole of CO2

3. Calculate the volume of O2 gas produced at STP for the 3. Calculate the volume of O2 gas produced at STP for the complete decomposition of 12.5 g HgO if the yield is 45.0 %. 2HgO → 2Hg + O2 12.5 g ? L 1 2

3. Calculate the volume of O2 gas produced at STP for the 3. Calculate the volume of O2 gas produced at STP for the complete decomposition of 12.5 g HgO if the yield is 45.0 %. 2HgO → 2Hg + O2 12.5 g ? L 12.5 g HgO x 1mole 216.6g

3. Calculate the volume of O2 gas produced at STP for the 3. Calculate the volume of O2 gas produced at STP for the complete decomposition of 12.5 g HgO if the yield is 45.0 %. 2HgO → 2Hg + O2 12.5 g ? L 12.5 g HgO x 1mole x 1 mole O2 216.6g 2 mole HgO

3. Calculate the volume of O2 gas produced at STP for the 3. Calculate the volume of O2 gas produced at STP for the complete decomposition of 12.5 g HgO if the yield is 45.0 %. 2HgO → 2Hg + O2 12.5 g ? L 12.5 g HgO x 1mole x 1 mole O2 x 22.4 L 216.6g 2 mole HgO 1 mole

3. Calculate the volume of O2 gas produced at STP for the 3. Calculate the volume of O2 gas produced at STP for the complete decomposition of 12.5 g HgO if the yield is 45.0 %. 2HgO → 2Hg + O2 12.5 g ? L 12.5 g HgO x 1mole x 1 mole O2 x 22.4 L x 0.450 216.6g 2 mole HgO 1 mole

3. Calculate the volume of O2 gas produced at STP for the 3. Calculate the volume of O2 gas produced at STP for the complete decomposition of 12.5 g HgO if the yield is 45.0 %. 2HgO → 2Hg + O2 12.5 g ? L 12.5 g HgO x 1mole x 1 mole O2 x 22.4 L x 0.450 = 0.291 L 216.6g 2 mole HgO 1 mole

4. How many litres of CO2 are produced by the reaction of 100. g 4. How many litres of CO2 are produced by the reaction of 100. g of Fe2O3, if the actual yield was 19.0 L @ STP, calculate the percentage yield. 19.0 L 2Fe2O3 + 3C  4Fe + 3CO2 100. g ? L 3 2

4. How many litres of CO2 are produced by the reaction of 100. g 4. How many litres of CO2 are produced by the reaction of 100. g of Fe2O3, if the actual yield was 19.0 L @ STP, calculate the percentage yield. 19.0 L 2Fe2O3 + 3C  4Fe + 3CO2 100. g ? L 100. g Fe2O3 x 1 mole x 3 mole CO2 x 22.4 L = 21.05 L 159.6 g 2 mole Fe2O3 1 mole Percentage yield = 19.0 L x 100% = 90.3 % 21.05 L 3 2