Mass of Substance = Volume of Substance x Density of Substance
Density of resorcinol = 1268.66 kg/m3
Density of resorcinol in pound/cup(US) = 1.2686600000000001
Mass of a Substance = 1.2686600000000001 x 7
7 cup(US) of resorcinol weighs 8.88062 pound