contestada

Which gas sample at STP has the same number
of molecules as a 2.0-liter sample of Cl2(g) at
STP?
(1) 1.0 L of NH3(g) (3) 3.0 L of CO2(g)
(2) 2.0 L of CH4(g) (4) 4.0 L of NO(g)