Chemistry and Chemical Reactivity (9th Edition)

Mass required: $0.125\ mol\times 22.9898\ g/mol=2.87\ g$ Volume: $2.87\ g\div 0.97\ g/cm^3=2.96\ cm^3$ In a perfect cube, the side would have: $\sqrt[3]{2.96\ cm^3}=1.43\ cm$