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)

STP signifies standard temperature and pressure. This conditions are at 1 atmospheric pressure and 0 degrees Celsius. It has been said that at these conditions, one mole of a gas molecule is equivalent to 22.4 liters of volume. Therefore, the correct answer is the second option which is 2 L of CH4.

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explanation:

4d^55s^1 ( third choice)