You must simply KNOW that 1*atm1⋅atm pressure will support a column of mercury that is 760*mm760⋅mm high; and thus "Torr"-=1*mm*HgTorr≡1⋅mm⋅Hg stands in for a pressure measurement. You must also know the relationship between "degrees Kelvin"degrees Kelvin, and "degrees centigrade"degrees centigrade: 00 ""^@C-=+273.15*K∘C≡+273.15⋅K
V=(nRT)/P=(0.1*molxx0.0821*(L*atm)/(K*mol)xx310*K)/((700*"Torr")/(760*"Torr"*atm^-1))V=nRTP=0.1⋅mol×0.0821⋅L⋅atmK⋅mol×310⋅K700⋅Torr760⋅Torr⋅atm−1
=??*L=??⋅L. The question would have been better proposed had it been specified that 0.1*mol0.1⋅mol quantity of gas had been enclosed in a piston at the given temperature and pressure.
