A 25.5 g sample of O2 at standard temperature and pressure (STP) would occupy what volume in litres?

2.39 A mixture of helium and neon weighing 5.50 g occupies a volume of 6.80 L at 300 K and 1.00 atm. Calculate the composition of the mixture in mass percent.

6. The ideal gas law is a very simple mathematical relationship that relates several physical properties of a gas. This law is only valid when the behavior of a gas is idealized according to three principal assumptions. (i) State the three assumptions made about an ideal gas, and for each assumption (ii) explain which physical property of a gas would be affected if that assumption was not made.

How many moles of fluorine gas will it take to fill a 15.3 L elastic container if we know that 96.3 g of fluorine gas will fill it only 8.26 L?

Hydrogen gas is the least dense of all gases. A sample of gas is found to occupy a volume of 1.23 L at 755 mm Hg and 0 degrees celcius. What volume, in liters, will this same gas occupy at 735 mm Hg pressure and a temperature of 5 degrees celcius?

A student is experimenting with gases. She finds that 0.13 mol of hydrogen gas (H2) has a volume of 4.8 L. She wants to measure the volume of 0.053 mol of oxygen gas (O2). What volume should she expect the oxygen gas to have? (Use the equation for Avogadro's law.)

What is the new volume of a 1.75L sample of nitrogen that is heated from 25 C to 300 C?

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

1a. A sealed 5.00 L flask contains an unknown gas at 1.05 atm and 296 K. How many moles of the unknown gas are in the flask? 1b. The same unknown gas sample as above has a root mean squared speed of 430.0 m/s. If it is one of the 11 elements that exist as a gas at these conditions, what is the identity of the gas?

A sample of Nitrogen gas occupies a volume of 31.9 ml at 86.8°C. What temperature in °C will it need to occupy a volume of 73 ml?