A 1.17-mol sample of methane gas is maintained in a 0.664-L container at 302 K. Calculate the pressure of the gas using both the ideal gas law and the van der Waals equation (van der Waals constants for CH4 are a = 2.25 L2atm/mol2 and b = 4.28×10-2 L/mol). Pideal gas equation =   _______atm Pvan der Waals   = _______atm

O Macmillan Learning Under identical conditions, separate samples of O₂ and an unknown gas were allowed to effuse through identical membranes simultaneously. After a certain amount of time, it was found that 7.24 mL of O₂ had passed through the membrane, but only 3.39 mL of of the unknown gas had passed through. What is the molar mass of the unknown gas? # 3 __a E unknown molar mass: D C $ 4 R F V do L % T G B MacBook Pro Y H & 7 N U g/mol J * 8 M | 1+ K ( 9 (>)) I command option { [ ? | + 11 } 1 delete ret

15.0 L of an ideal gas at 298 K and 3.36 atm are heated to 383 K with a new pressure of 6.35 atm. What is the new volume in liters?

In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is__________ if the partial pressures of He and Ne are 1.50 and 2.00 atm, respectively. Group of answer choices 0.417 0.238 0.179 0.583 0.357

1. A 2.00 L container at 100. oC contains some H2 gas and some N2 gas. a) If the partial pressures of H2 and N2 can be denoted as PH2 and PN2 respectively, write an equation to express the total pressure (Prota) of this container. (The container only has H2 gas and N2 gas) b) What is the partial pressure of N2 gas (PN2) in this container if Piotal is 46.6 atm and the partial pressure of H2 gas is 42.4 atm?

A 1.22 gram sample of an unknown gas is found to occupy a volume of 1.13 L at a pressure of 441 mmHg and a temperature of 45 °C. Assume ideal behavior. The molar mass of the unknown gas is  __________g/mol.

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ghment-tak! Google Keep E Economics-Googl. Music d nenos ..: nom Algebra Norten ondial Arkansas D. Video Library America An expandable vessel contains 693 ml of gas at 23 °C. What volume will the gas'sample occupy if it is placed in a bolling water bath (100. °C)? Volume = ml

A gas mixture with a total pressure of 2300 torr is used by a scuba diver. If the mixture contains 2.5 moles of helium and 5.0 moles of oxygen, what is the partial pressure, in torr, of each gas in the sample? Express your answer in torr to two significant figures. PHe = _____ PO2 _____

Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. Suppose the H₂ gas evolved by a certain chemical reaction taking place at 30.0 °C is collected over water, using an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 116. mL. g G Sketch of a gas-collection apparatus X collected gas water Calculate the mass of H₂ that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases. chemical reaction