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TUTOR cular Weight of G ing A flask with a total volume of 0.130 L is...
A flask with a volume of 1.02 L contains 14.58 g of an unknown gas at 35.1 °C and 846 torr. What is the molar mass of the unknown in g/mol? Report your answer to TWO places past the decimal. Do not include units. The gas constant R = 0.082058 L⋅atm/mol⋅K and 1 atm = 760 torr.
A flask with a volume of 3.16 L contains 9.33 g of an unknown gas at 32.0°C and 1.00 atm. What is the molar mass of the gas? (R = 0.08206 L • atm/K • mol) Multiple Choice 18 Ο 776 g/mol Ο 144 g/mol Ο 66.1 g/mol Ο 739 g/mol Ο 81.4 g/mol
A flask, at 25.0 oC, with a volume of 1.00 L is filled with an unknown gas to a pressure of 100.00 kPa. By weighing the flask before and after filling, it is found that the mass of the gas is 0.16 g. i. How many moles of gas are in the flask? ii. What is the molar mass of the gas?
A 0.305-g sample of gas occupies a flask with a total volume of 125 mL at 750. mmHg and 25°C. What is the molar mass of the gas in g/mol?
A 1.25 g sample of an unknown gas at 23 "C and 1.00 atm is stored in a 2.85 L flask. What is the density of the gas? density: What is the molar mass of the gas? molar mass: y/mol
A flask with a volume of 3.10 L , provided with a stopcock, contains ethane gas (C2H6) at a temperature of 310 K and atmospheric pressure 1.013×105 Pa . The molar mass of ethane is 30.1 g/mol . The system is warmed to a temperature of 381 K , with the stopcock open to the atmosphere. The stopcock is then closed, and the flask cooled to its original temperature. A) What is the final pressure of the ethane in the...
NTERACTIVE EXAMPLE General Gas Law Helium-filled balloons are used to carry scientific instruments high into the atmosphere. Suppose a balloon is launched when the temperature is 21.5 °C, and the barometric pressure is 752 mm Hg. If the balloon's volume is 4.37x10L (and no helium escapes from the balloon), what will the volume be at a height of 20 miles, where the pressure is 76.0 mm Hg, and the temperature is -33.0 °C? Submit Show Approach Show Tutor Steps TOR...
4. A 200.0mL flask of an unknown gas was placed in a hot water bath. The temperature of the bath was found to be 99°C. The pressure of the flask was 733mmHg. The flask with the unknown gas in it had a mass of 126.593g. The same flask weighed 125.623g when it was empty. Determine the mass of the unknown gas in the flask. Determine the Molar Mass of an unknown gas. Assume that the Ideal Gas Law is obeyed...
Attem A 3.85 g sample of an unknown gas at 75 C and 1.10 atm is stored in a 1.55 L flask. What is the density of the gas? density: 2.5 g/L What is the molar mass of the gas? molar mass: 0.08 g/mol privacy policy about us terms of use careers contact un help
Two methods were descibed for determining the volume of the
flask used for the molar mass determination. Which method will give
a more precise determination of the volume? Why?
When two acceptable determinations of the weight of vapor needed to fill the flask have been obtained, remove the foil cover from the flask (do not discard) and clean out the flask. Fill the flask to the very rim with tap water, cover with the foil cover, and weigh the flask,...