A 300. L kiln is used for vitrifying ceramics. It is currently operating at 1405 ∘C , and the pressure is 1.050 atm . How many moles of air molecules are within the confines of the kiln?

Answer 1

What we know:

Volume = V = 300 L

Temperature = T = 1405ºC +273 = 1678K (temperature must be in Kelvin)

Pressure = P = 1.050 atm

What we are asked for:

moles = n

What equation do we use?

Ideal gas law: PV = nRT and solve for n (moles)

n = PV/RT

n = (1.050 atm)(300. L) / (0.0821 Latm/Kmol)(1678K)

n = 2.287 moles