a. What is the molecular weight of 3.7 g of an unknown gas that occupies 450...
a. What is the molecular weight of 3.7 g of an unknown gas that occupies 450 mL at 20.0°C and 2.0 atm? The value of R 0.0821 L atm mol K-1
b. Aluminum and oxygen react to form aluminum oxide. How many L of oxygen at 296 K and 1.4 atm of pressure are necessary to form 3.25 g of aluminum oxide?
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a. What is the molecular weight of 3.7 g of an unknown gas that
occupies 450...
Question 1 What is the molar mass of 3.7 g of an unknown gas that occupies...
Question 1 What is the molar mass of 3.7 g of an unknown gas that occupies 450 mL at 20.0°C and 2.0 atm? The value of R = 0.0821 L atm mol-1 k-19
11. A 0.125 g sample of an unknown gas at 286 K occupies a volume of...
11. A 0.125 g sample of an unknown gas at 286 K occupies a volume of 0.0555 L at a pressure of 0.691 atm. What is the molecular weight of this gas? PV-ART a) 76.5 g/mol m=? P=0.691 to 286k v=0,0555L b) 56.1 g/mol c) 84.2 g/mol d) 79.5 g/mol 23.46916 = 0.016 mol 0.60 (0.0555L) an (0.08206)(2066) 0,0383505 n 23.46916 234691
Pre-Laboratory Questions and Exercises Due before lab begins. Answer in the space provided 1. a) Determine...
Pre-Laboratory Questions and Exercises Due before lab begins. Answer in the space provided 1. a) Determine the number of moles of krypton gas contained in a 3.25 liter tank at a pressure 5.80 atm and a temperature of 25.5 °C. 12 5.80 An 7=25.59(+2733 299.51 Gas constant, R=0.0821 L. Atm. k mol = 0.769 mol vor of kryptan gas, v= 3.25h b) If the gas was oxygen instead of krypton, will the answer be the same? Why or why not?...
5. At what pressure will 7.89 g of ammonia gas, NH, occupy 7.46 L at 20.0...
5. At what pressure will 7.89 g of ammonia gas, NH, occupy 7.46 L at 20.0 c? (1.49 atm) 6. Aluminum reacts with oxygen according to the following reaction: 4Al(s)+30, (g)-2Al,0,(s) How many liters of oxygen gas at STP are required to completely react with 55.0 g of aluminum? (34.2 L) 7. Considering the same reaction as in question 6, how many grams of aluminum oxide will be produced from the complete reaction of 1.27 L of oxygen gas at...
5. At what pressure will 7.89 g of ammonia gas, NH,, occupy 7.46 L at 20.0°C?...
5. At what pressure will 7.89 g of ammonia gas, NH,, occupy 7.46 L at 20.0°C? instabo (1.49 atm) anella sud del RETETE 6. Aluminum reacts with oxygen according to the following reaction: 4Al(s)+30,(8) ► 2A1,0,(3) How many liters of oxygen gas at STP are required to completely react with 55.0 g of aluminum? (34.2 L) 7. Considering the same reaction as in question 6, how many grams of aluminum oxide will be produced from the complete reaction of 1.27...
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water...
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0°C. What is the molecular weight of the unknown solute (R - 0.0821 L'atm/K mol)?
A sample of gas of mass 1.81g occupies a volume of 629mL at 23°C and 1...
A sample of gas of mass 1.81g occupies a volume of 629mL at 23°C and 1 atm pressure. What is the molar mass of the gas? (R 0.0821 L. atm/mol-K)
5. The figure shows a pV diagram for 4.3 g of oxygen gas (02) in a...
5. The figure shows a pV diagram for 4.3 g of oxygen gas (02) in a sealed container. The temperature T1 of the gas in state 1 is 21°C. What are the temperatures T3 and T4 of the gas in states 3 and 4? The ideal gas constant is R 8.314 J/mol K 0.0821 L atm/mol K, and the ATOMIC weight of oxygen is 16 g/mol. 2 2.0 p1 15 P 4. 3 0.50 Vcm3) 150 100 50
A 1.28 gram sample of gas occupies 345 cmA3 at 58.2C and 1.15 atm. What is...
A 1.28 gram sample of gas occupies 345 cmA3 at 58.2C and 1.15 atm. What is the molecular weight of the gas?* O 14.4 g/mo O 53.5 g/mol O 68.5 g/mol O 87.7 g/mol 1 point 1 point What volume does 0.065 moles of oxygen gas occupy at STP?* O 0.046 L O 1.3L O 1.5L ○ 150L
Question 10 of 22 A 4.05 g sample of an unknown gas at 35 °C and...
Question 10 of 22 A 4.05 g sample of an unknown gas at 35 °C and 1.05 atm is stored in a 2.15 L flask. What is the density of the gas? density: 1.88372 g/L What is the molar mass of the gas? molar mass: g/mol Incorrect Question 14 of 22 A gas mixture is made by combining 6.7 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 15.14 L. What...
Question 1 What is the molar mass of 3.7 g of an unknown gas that occupies 450 mL at 20.0°C and 2.0 atm? The value of R = 0.0821 L atm mol-1 k-19
11. A 0.125 g sample of an unknown gas at 286 K occupies a volume of 0.0555 L at a pressure of 0.691 atm. What is the molecular weight of this gas? PV-ART a) 76.5 g/mol m=? P=0.691 to 286k v=0,0555L b) 56.1 g/mol c) 84.2 g/mol d) 79.5 g/mol 23.46916 = 0.016 mol 0.60 (0.0555L) an (0.08206)(2066) 0,0383505 n 23.46916 234691
Pre-Laboratory Questions and Exercises Due before lab begins. Answer in the space provided 1. a) Determine the number of moles of krypton gas contained in a 3.25 liter tank at a pressure 5.80 atm and a temperature of 25.5 °C. 12 5.80 An 7=25.59(+2733 299.51 Gas constant, R=0.0821 L. Atm. k mol = 0.769 mol vor of kryptan gas, v= 3.25h b) If the gas was oxygen instead of krypton, will the answer be the same? Why or why not?...
5. At what pressure will 7.89 g of ammonia gas, NH, occupy 7.46 L at 20.0 c? (1.49 atm) 6. Aluminum reacts with oxygen according to the following reaction: 4Al(s)+30, (g)-2Al,0,(s) How many liters of oxygen gas at STP are required to completely react with 55.0 g of aluminum? (34.2 L) 7. Considering the same reaction as in question 6, how many grams of aluminum oxide will be produced from the complete reaction of 1.27 L of oxygen gas at...
5. At what pressure will 7.89 g of ammonia gas, NH,, occupy 7.46 L at 20.0°C? instabo (1.49 atm) anella sud del RETETE 6. Aluminum reacts with oxygen according to the following reaction: 4Al(s)+30,(8) ► 2A1,0,(3) How many liters of oxygen gas at STP are required to completely react with 55.0 g of aluminum? (34.2 L) 7. Considering the same reaction as in question 6, how many grams of aluminum oxide will be produced from the complete reaction of 1.27...
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0°C. What is the molecular weight of the unknown solute (R - 0.0821 L'atm/K mol)?
A sample of gas of mass 1.81g occupies a volume of 629mL at 23°C and 1 atm pressure. What is the molar mass of the gas? (R 0.0821 L. atm/mol-K)
5. The figure shows a pV diagram for 4.3 g of oxygen gas (02) in a sealed container. The temperature T1 of the gas in state 1 is 21°C. What are the temperatures T3 and T4 of the gas in states 3 and 4? The ideal gas constant is R 8.314 J/mol K 0.0821 L atm/mol K, and the ATOMIC weight of oxygen is 16 g/mol. 2 2.0 p1 15 P 4. 3 0.50 Vcm3) 150 100 50
A 1.28 gram sample of gas occupies 345 cmA3 at 58.2C and 1.15 atm. What is the molecular weight of the gas?* O 14.4 g/mo O 53.5 g/mol O 68.5 g/mol O 87.7 g/mol 1 point 1 point What volume does 0.065 moles of oxygen gas occupy at STP?* O 0.046 L O 1.3L O 1.5L ○ 150L
Question 10 of 22 A 4.05 g sample of an unknown gas at 35 °C and 1.05 atm is stored in a 2.15 L flask. What is the density of the gas? density: 1.88372 g/L What is the molar mass of the gas? molar mass: g/mol Incorrect Question 14 of 22 A gas mixture is made by combining 6.7 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 15.14 L. What...
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