A cloud of helium gas consists of helium atoms. The atoms have a root-mean-square speed of 652 m/s and the gas exerts a pressure of Pa. Find the volume of the gas. Use a value of kg for the mass of a helium atom. Answer to three significant figures.
A cloud of hydrogen gas with a volume of 1.05 m3 consists of 4.22 moles of hydrogen atoms. The atoms have a root-mean-square speed of 983 m/s. Find the pressure of the gas to the nearest kilopascal. Use a value of 1.0079 g for the molar mass of hydrogen atom and a value of for the molar gas constant.