6. ) A sample of methane gas, CH4, at 322.0 degrees celcius and a pressure of 662 mmHg had a volume of 36.4 L. What would be the volume of the gas at STP
7.) The CO2 gas that was evolved during the fermentation of sugar was collected. After purification its volume was measured as 25.0 L at 22.5 Celcius and 702 mm Hg. How many moles of the CO2 gas were collected ?
8.) Commercially, compressed oxygen is sold in metal cylinders. If a 120. L cylinder is filled with oxygen to a pressure of 125.0 atm at 25.0 Celcius, find the mass of the O2 gas present in grams.
9.) What is the density of Ar gas, in units of g/L, at a pressure of 662 mm Hg and a temperature of 25.0 Celcius ?
10.) In a Dumas experiment to determine the molar mass of a substance, it was found that a 4.00 gram of the vapour occupies 250.0 mL at STP. Calculate the molar mass of the substance.
11.) What volume of oxygen gas, O2 at 320 K and 680 torr will react completely with 2.50 L of NO gas at the same temperature and pressure ?
2 NO(g) + O2(g) --> 2 NO2
6. ) A sample of methane gas, CH4, at 322.0 degrees celcius and a pressure of...
a) A sample of oxygen gas is collected by displacement of water at 25°C and 1.13 atm total pressure. If the vapor pressure of water is 23.756 mm Hg at 25°C, what is the partial pressure of the oxygen gas in the sample? WebAssign will check your answer for the correct number of significant figures. mm Hg b) Calcium oxide can be used to "scrub" carbon dioxide from air. CaO(s) + CO2(g) → CaCO3(s) What mass of CO2 could be...
A sample of methane gas collected at a pressure of 463 mm Hg and a temperature of 300 K has a mass of 13.5 grams. The volume of the sample is____ L.
0.760 mol sample of methane gas at a temperature of 29.0 °C is found to occupy a volume of 25.8 liters. The pressure of this gas sample is mm Hg. A sample of oxygen gas collected at a pressure of 632 mm Hg and a temperature of 298 K has a mass of 18.5 grams. The volume of the sample is
1. A 1.64-g sample of an unknown gas has a volume of 589 mL and a pressure of 757 mm Hg at 38.6 °C. Calculate the molar mass of this compound. g/mol 2. Calculate the density of methane gas (in g/L) at 584 mm Hg and 36.4 °C. g/L
9.) What is the density of Ar gas, in units of g/L, at a pressure of 662 mm Hg and a temperature of 25.0°C ?
A sample of methane gas at a pressure of 1.17 atm and a temperature of 23.8 °C, occupies a volume of 15.8 liters. If the gas is compressed at constant temperature to a volume of 5.62 liters, the pressure of the gas sample will be atm. A sample of oxygen gas at a pressure of 0.976 atm and a temperature of 22.7 °C, occupies a volume of 786 mL. If the gas is allowed to expand at constant temperature until...
Suppose you are performing a gas-producing reaction to experimentally determine the molar volume of the gas at STP. Mg(s) + 2 HCl(aq) + MgCl2 (aq) + H2(g) A sample of 0.0883 g of Mg, which has a molar mass of 24.31 g/mol, produces 82.5 mL of H2 gas. The gas is collected over water at an atmospheric pressure of 774.5 mm Hg at 22 °C, at which the vapor pressure of water is 19.8 mm Hg. What is the experimental...
A 30.0 L vessel contains a mixture of carbon dioxide, sulfur trioxide, oxygen, and neon gases at 25.0°C and 2.75 atm. The mole fraction of each gas is 0.25. What mass of each gas is present? Answer 2. Fluorine diffuses 3.45 times faster than gas Q. Calculate the molar mass of gas Q. Answer 3. 1.500 g of a gas collected over H.O at 29.0°C and 740.9 mm Hg occupies a volume of 217.2 mL. The vapor pressure of H.O...
POST-LABORATORY QUESTIONS (Show your calculations). 1. A sample of gas weighs 3.10 g and occupies a volume of 1.272 ml at 30 °C and 720 mm Hg. What is the molar mass of the gas? 2.3 moles of hydrogen occupy a volume of 67.20 L, at standard temperature and pressure (STP. 0 °C and 760 mmHg). What is the density of hydrogen at STP? 3.2.5 moles of gas, at 1590 mmHg, occupy a volume of 28.00 L. What is the...
Use the References to access important values if needed for this question. Oxygen gas can be prepared by heating potassium chlorate according to the following equation: 2KCIO3(s)— 2KCI(s) + 302(g) The product gas, 02, is collected over water at a temperature of 25 °C and a pressure of 747 mm Hg. If the wet O2 gas formed occupies a volume of 6.24 L, the number of grams of O2 formed is g. The vapor pressure of water is 23.8 mm...