A container has a volume of #1 L# and holds #4 mol# of gas. If the container is expanded such that its new volume is #15 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 · 2018-03-01T18:11:27

The number of moles to be injected is #=56 mol#

Apply Avogadro's Law

#V_1/n_1=V_2/n_2# at #"constant temperature and pressure"#

The initial volume is #V_1=1L#

The initial number of moles is #n_1=4 mol#

The final volume is #V_2=15L#

The final number of moles is

#n_2=V_2/V_1*n_1#

#=15/1*4=60mol#

The number of moles to be injected is #=60-4=56 mol#