The pressure gauge on a cylinder used to fill balloons with helium shows a pressure of 1275 psi at a temperature of 25.00 $\degree$C.Assuming the cylinder has a volume of 10.0 L, how many grams of helium does the cylinder contain?

Question

Quizplus · Accepted Answer

Using the ideal gas law, PV = nRT, and converting the temperature to Kelvin and pressure to atm, we can solve for the number of moles of helium. Then, multiplying by the molar mass of helium (4.00 g/mol) gives approximately 142 grams.

The Pressure Gauge on a Cylinder Used to Fill Balloons °\degree°

The Pressure Gauge on a Cylinder Used to Fill Balloons $\degree$