Calculate `^^_(m)^(0)` for `CaCl_(2) and MgSO _(4)` from the data given in Table `3.4.`

Explanation

`^^_(m(CaCl_(2)))^(@) = lambda_(ca^(2+))^(@) + 2 lambda_(cl^(-))^(@) = 119.0 S cm^(2) mol^(-1) + 2(76.3) S cm^(2) mol^(-1)`
` = (119.0+ 152.6) S cm^(2) mol^(-1)`
`^^_(m(MgSO_(4)))^(@) = lambda_(mg^(2+))^(0) + lambda_(sO_(4)^(2-))^(@) = 106.0 S cm^(2) mol^(-1) + 160.0 S cm^(2) mol^(-1)`
= 266 S `cm^(2) mol^(-1)`