A container has a volume of #3 L# and holds #9 mol# of gas. If the container is expanded such that its new volume is #36 L#, how many moles of gas must be injected into the container to maintain a constant temperature and pressure?

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Answer 1 · 2017-03-31T10:08:39

The number of moles injected is #=99mol#

We apply Avogadro's Law

#V_1/n_1=V_2/n_2#

#V_1=3L#

#n_1=9mol#

#V_2=36L#

#n_2=V_2/V_1*n_1#

#=36/3*9=108mol#

Number of moles to be injected is #=108-9=99mol#