I Review A gas mixture contains 75.2% nitrogen and 24.8% krypton by mass. Part A What is the partial pressure of krypton in the mixture if the total pressure is 785 mmHg ? Express your answer with the appropriate units. ? PKr = Value Units

how many moles of S2 are needed to produce .750 moles of SO2 gas?

How many grams of argon gas are needed to have 5.15 mol of argon gas? 1.822.97g 2.205.74g 3.102.87g 4.411.49g 5.5.15g

1. Does the ideal gas law have any variables that are dependent on the identity of the gas? Explain 2. According to the ideal gas law, how are the pressure and amount of gas particles related if all other factors are held constant? 3. According to the ideal gas law, how are the pressure and temperature of a gas-related if all other factors are held constant? 4. According to the ideal gas law, how are the pressure and volume of a gas-related if all other factors are held constant? 5. How is the pressure exerted by a given number of particles affected by the mass of the particles? Propose a hypothesis to explain this observation. How might you test your hypothesis?

A sample of polyatomic gas weighs 6.94 g and at a temperature 30.0 C it has a volume of 2.49 L and a pressure of 361 torr.   What is the molecular weight of the gas? (hint: remember that PV=nRTPV=nRT) The molecular structure of the gas in the above problem has a total of 7 atoms and contains only sulfur and fluorine atoms. Based on its molecular weight you calculated above, which of the following empirical formulas is most likely to be correct for the gas? SF6 S2F5 S3F4 S4F3 S5F2 S6F None of these formulas are correct

dies if needed for this question. The stopcock connecting a 3.13 L bulb containing methane gas at a pressure of 3.64 atm, and a 3.04 L bulb containing hydrogen gas at a pressure of 1.29 atm, is opened and the gases are allowed to mix. Assuming that the temperature remains constant, the final pressure in the system is atm.

According to Dalton, the pressure exerted by a gas inside a container is proportional to the number of molecules of that gas.  If 4.00 x 1023 molecules of N2 and 2.00 x 1023 molecules of O2 are mixed in a container they exert a total pressure of 1686 torr.  What portion of that pressure (in torr units) is exerted by the N2?  Report answer to four significant figures in decimal notation. _____________________ torr,   What portion of that pressure (in torr units) is exerted by the O2?  Report answer to four significant figures in decimal notation. ____________________ torr

Consider the apparatus shown below with the valve closed. The volume and pressure of each gas is indicated. F2 N2 Valve 3.00 L 6.00 L 2.00 atm 4.00 atm When the valve is opened the two gases mix uniformly. At that point, what is the mole fraction of nitrogen in the mixture? 0.800 none of the answers are correct 0.500 0.333

How many grams of CO2 are in 345.1 L of CO2 gas?