At #"STP"#, how many molecules would there be in a #3.28*L# volume of #H_2S(g)#?

1 Answer
anor277
Mar 5, 2016

The molar volume of an ideal gas is #22.4# #L# at #STP#.

Explanation:

We idealize the behaviour of hydrogen sulfide, and take the quotient:

#"Volume of "H_2S# #=# #(3.28*L)/(22.4*L*mol^-1)# #=##??mol#.

Now #1# mole of gas contains #N_A# (#6.022xx10^23*mol^-1)# particles, so:

#"No. of molecules"# #=# #6.022xx10^23*mol^-1xx(3.28*L)/(22.4*L*mol^-1)# #=#

#??H_2S" particles?"#

How smelly would such a quantity of hydrogen sulfide be? You would probably pass out!

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