For co2 the van der waals constants are a=3.59 atm • l2/mol2 and b=0.0427 l/mol. calculate the pressure exerted by 2.50 moles of co2 confined in a volume of 5.00 l at 450 k.

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium