How many moles of hydrogen gas are present in a 50 liter steel cylinder if the pressure is 10 atm and the temperature is 27 degrees Celsius?

12.2 moles of H₂

Explanation:

P. V = n. R. T is the Ideal Gases Law, which is useful to solve this:

First of all, we need to convert the T°C to T° K

T° K = T°C + 273 → 27°C + 273 = 300 K

Let's replace the data given: 10 atm. 50L = m. 0.082L. atm/m. K. 300K

500 L. atm / 0.082L. atm/m. K. 300K = m

12.2 moles = n