Express your answer with the appropriate units.

Question

Calculate the pressure, in atmospheres, of 2.18 moles of helium gas in a 10.0-L container at 25 ∘C.

Answer 1

This question requires the use of the Ideal gas law which states that PV=nRT, where P represents pressure in atms, V represents volume in liters, n represents moles, R represents a constant of 0.0821 with units ((atm*L)/(Kelvin*mol)), and T represents temperature in Kelvin.

So our values for this question are

Pressure = unknown

Volume = 10 liters

number of moles = 2.18

Temperature = 25 degrees celsuis, but the units must be in Kelvin, so the temperature is 273 + 25 = 298 Kelvin.

R= 0.0821

To answer this question, you would use these values in the ideal gas law equation and solve for pressure.