How many moles of argon atoms are present in 11.2 l of argon gas at stp?

Using the current recommended STP values of

0

∘

C

and

100 kPa

,

11.2 L

of Ar atoms contain

0.493 mol Ar

.

Using the older standard, as indicated in the explanation,

11.2 L

of Ar atoms contain

0.500 mol

.

b is the correct