QUESTION 12 1 points Save Answer "Based on the reaction below, if 15.61 g of NaCIO 3 (MM = 106.44 g/mol) is reacted, how many liters of O 2 gas will be formed at STP? 2 NaCIO 3 (s) -+ 2 NaCl (s) + 3 0 2 (9)" O 229.1 L O 74.18 L O 4.928 L O 3.285 L 0.4566 L Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and SubmitH. The relation between the pressure, volume, amount, and temperature of a gas under conditions QUESTION 2 0.5 points Save Answer A gas was found to have a pressure of 688.8 torr. What is the pressure in atm? O 0.9063 atm 356.2 atm O 0.4686 atm O 0.7692 atm 584.6 atm QUESTION 3 0.5 points Save Answer A system was cooled from 127.0 .C to 13.50 C. If the system had an initial pressure of 234.5 torr, what is the final pressure? 984.0 torr O 131.8 torr 168.0 torr O 85.35 torr 705.0 torr QUESTION 4 0.5 points Save Answer A piston with 0.03948 mol of gas has gas removed until it contains 0.03610 mol. If the final volume was 809.6 mL, what was the intial volume? 643.0 mL O 885.4 mL O 979.5 mL O 714.4 ml 1466 ml QUESTION 5 1 points Save Answer What is the volume (in L) of 0.021182 moles of an ideal gas at 420.0 K with a pressure of 0.9375 atm? Hint: consider the proper units for using the ideal gas law. R = 0.08206 L atm/(mol K) O 778.6 L O 1131 L O 0.7786 L O 0.6843 L 863.3 QUESTION 6 1 points Save Answer How many moles of ideal gas will exert a pressure of 816.5 torr at 118.8 .C with a volume of 1,298.6 ml? Hint: consider the proper units for using the ideal gas law. R = 0.08206 L atm/(mol K) O 0.06167 mol 0.04341 mol O 0.02304 mol O 0.01916 mol 0.07704 mol Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and SubmitQUESTION 7 1 points Save Answer A 0.5224 g sample of gas occupies 684.3 ml at 0.5705 atm and 90.81 .C. What is the molar mass of the gas? O 0.006831 g/mol O 0.02503 g/mol O 39.95 g/mo 0.005719 g/mol O 53.41 g/mo QUESTION 8 1 points Save Answer What is the density of a gas at STP if it has a molar mass of 121.3 g/mol? O 5412 g/L 958 g/L O 6224 g/L O 4.501 g/L O 5.415 g/L QUESTION 9 1 points Save Answer What is the density of a gas when one mole at 56.41 .C has a pressure of 1.412 atm? The gas has a molar mass of 79.12 g/mol. 2.687 g/L O 3.530 g/L O 1.240 g/L O 4.134 g/L O 1.054 g/L QUESTION 10 1 points Save Answer A mixture of gases contains He, Ar, and Kr. If the total pressure of the mixture is 9987.0 torr and the pressure of Kr is 4376 torr, what is the mole fraction of Kr? O 0.7799 O 0.4382 O 2.235 O 0.2201 O 0.1797 QUESTION 11 1 points Save Answer A mixture of gases contains 0.1568 mol of He, 0.5665 mol of Ar, 0.8842 mol of Kr. If the total pressure of the gas is 7879.0 torr, what is the pressure of Ar? O 5102 torr O 9636 torr O 7879 torr O 2777 torr O 4288 torr QUESTION 12 1 points Save Answer Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit