Chapter 3 Chemical Reactions - 3-9 Classifying Reactions in Aqueous Solution - Case Study - Questions - Page 132: 2

$1.79\times10^{-5}\ g$

Converting from number of ions to number of moles: $100\times10^{15} \ ions\div 6.022\times10^{23}\ ions/mol=1.66\times10^{-7} mol$ Converting from number of moles to mass: $1.66\times10^{-7} mol\times 107.8682\ g/mol=1.79\times10^{-5}\ g$