Complete the following table, which lists information about the measured acid dissociation constants of three unknown weak acids.

Note: be sure each number you put in the table has the correct number of significant digits.

$\backslash$table$[[$acid$,K_a,p{K}_a,$relative strength$],[$A$,3{10}^{-10},,],[$B$,2\mathrm{.}47{10}^{-9},,],[$C$,4\mathrm{.}2{10}^{-3},,]]$