Homework Answers
A flask with a volume of 272 ml is filled with an unknown gas mixture. When...
A flask with a volume of 272 ml is filled with an unknown gas mixture. When filled, it is found that this gas mixture weights 0.211 g at 785 torr and 27C. What is the average molecular weight of the gas mixture?
1. A 125mL Erlenmeyer flask has a measure volume of 152 mL. A 0.177 g sample...
1. A 125mL Erlenmeyer flask has a measure volume of 152 mL. A 0.177 g sample of an unknown vapor occupies the flask at 97.8°C a pressure of 748 torr. Assume ideal gas behavior. a. How many moles of vapor are present? b. What is the molar mass of the vapor? 2. a) If the volume of the flask is mistakenly recorded as 125mL in Question 1, what is the reported molar mass of the vapor? b) What is the...
Exercise 6.4 • How many moles of gas will occupy a 750 ml volume at 25°C...
Exercise 6.4 • How many moles of gas will occupy a 750 ml volume at 25°C and 0.42 atm pressure? . 2 If the argon gas in a light bulb exerts a pressure of 0.54 atm at 20°C. what pressure will it exert at 160°C? 3 What is the molar mass of a gas if 0.21 g occupies a 0.13 liter volume at 80°C and 0.92 atm pressure? - How many grams of ammonia gas, NH,, are there in a...
A sample of carbon monoxide gas occupies a volume of 263 mL at a pressure of...
A sample of carbon monoxide gas occupies a volume of 263 mL at a pressure of 781.3 torr and a temperature of 399 K. What would its temperature be if the volume were changed to 82 mL at a pressure of 657.5 torr? QUESTION 2 Under conditions of constant temperature and volume, how many additional moles of gas would have to be added to a flask containing 2.7 moles of gas at 25.0 °C and 1.00 atm pressure in order...
a.) A 2.50 L flask was used to collect a 2.65 g sample of propane gas,...
a.) A 2.50 L flask was used to collect a 2.65 g sample of propane gas, . After the sample was collected, the gas pressure was found to be 743 mmHg. What was the temperature of the propane in the flask? ______°C b.)Butane,C4H10 , is an easily liquefied gaseous fuel. Calculate the density of butane gas at 0.791 atm and 24°C. Give the answer in grams per liter. Density = ______g/L c.) A 0.488-g sample of a colorless liquid was...
Part 1. The air in a bicycle tire is bubbled through water and collected at 25∘C. If the total volume of gas collected i...
Part 1. The air in a bicycle tire is bubbled through water and collected at 25∘C. If the total volume of gas collected is 5.60 L at a temperature of 25∘C and a pressure of 760 torr, how many moles of gas were in the bicycle tire? - Part 2. A 295-mL flask contains pure helium at a pressure of 755 torr . A second flask with a volume of 480 mL contains pure argon at a pressure of 714...
The volume of a gas is 36.0 ml at 10.0 degree C and 4.50 atm. At What temperature (degree C) will the gas have...
The volume of a gas is 36.0 ml at 10.0 degree C and 4.50 atm. At What temperature (degree C) will the gas have a pressure of 3.50 atm and a volume of 85.0 mL? 623 degree C 220 degree C 77.7 degree C 896 degree C 246 degree C A 125-mL tank is filled with O_2 gas until the pressure is 75.0 atm at 25 degree C. Calculate the moles of oxygen in the tank. 4.57 0.00378 0.505 0.383...
Need help answering all questions; 7,8,9,10,11,12, and 13. Thanks 7. How many mole of nitrogen gas...
Need help answering all questions; 7,8,9,10,11,12, and 13. Thanks
7. How many mole of nitrogen gas will occupy a 5.00 L container at STP? 8. A sample of hydrogen sulfide gas at 760 torr and 25 deg C in a 2.00 L container is allowed to expand into a 10.0 L container at 25 deg C, What is the pressure of the gas in 10.0 L container? 9. Calculate the volume of 2.00 g of sulfur dioxide at STP? 10....
A gas with a volume of 15.00 ml when pressure is 4.00 x 10 4 mmHg...
A gas with a volume of 15.00 ml when pressure is 4.00 x 10 4 mmHg and the temperature is 22.000 oC. What is the pressure when the volume of the gas change to 2.000 mL at 28.000 oC? What is the mole of 99 mL of carbon dioxide gas at 38oC and 771 torr? R = 0.0821 Latm/molK Round to the thousandth place.
i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
1. A 125mL Erlenmeyer flask has a measure volume of 152 mL. A 0.177 g sample of an unknown vapor occupies the flask at 97.8°C a pressure of 748 torr. Assume ideal gas behavior. a. How many moles of vapor are present? b. What is the molar mass of the vapor? 2. a) If the volume of the flask is mistakenly recorded as 125mL in Question 1, what is the reported molar mass of the vapor? b) What is the...
Exercise 6.4 • How many moles of gas will occupy a 750 ml volume at 25°C and 0.42 atm pressure? . 2 If the argon gas in a light bulb exerts a pressure of 0.54 atm at 20°C. what pressure will it exert at 160°C? 3 What is the molar mass of a gas if 0.21 g occupies a 0.13 liter volume at 80°C and 0.92 atm pressure? - How many grams of ammonia gas, NH,, are there in a...
A sample of carbon monoxide gas occupies a volume of 263 mL at a pressure of 781.3 torr and a temperature of 399 K. What would its temperature be if the volume were changed to 82 mL at a pressure of 657.5 torr? QUESTION 2 Under conditions of constant temperature and volume, how many additional moles of gas would have to be added to a flask containing 2.7 moles of gas at 25.0 °C and 1.00 atm pressure in order...
The volume of a gas is 36.0 ml at 10.0 degree C and 4.50 atm. At What temperature (degree C) will the gas have a pressure of 3.50 atm and a volume of 85.0 mL? 623 degree C 220 degree C 77.7 degree C 896 degree C 246 degree C A 125-mL tank is filled with O_2 gas until the pressure is 75.0 atm at 25 degree C. Calculate the moles of oxygen in the tank. 4.57 0.00378 0.505 0.383...
Need help answering all questions; 7,8,9,10,11,12, and 13. Thanks
7. How many mole of nitrogen gas will occupy a 5.00 L container at STP? 8. A sample of hydrogen sulfide gas at 760 torr and 25 deg C in a 2.00 L container is allowed to expand into a 10.0 L container at 25 deg C, What is the pressure of the gas in 10.0 L container? 9. Calculate the volume of 2.00 g of sulfur dioxide at STP? 10....
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
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