## Introductory Chemistry (5th Edition)

a) $72.67 dozens$ b) $6.055 gross$ c) $1.744 reams$ d) $1.45\times10^{-21} moles$
We can use the conversion factors in the question to solve: a) $872 sheets\div 12 dozens = 72.67 dozens of paper sheers$ b) $872 sheets\div 144 gross = 6.055 gross of paper sheets$ c) $872 sheets\div 500 reams = 1.744 reams of paper sheets.$ d) $872 sheets\div 6.022\times10^{23} = 1.45\times10^{-21} moles of paper sheets$