We are given the following quantity:
[tex]Q=160\text{ micro-Coulomb}[/tex]Let's remember that in scientific notation the term "Micro" refers to ten to the minus 6, therefore, this is equivalent to:
[tex]Q=160\times10^{-6}C[/tex]We can convert this into standard notation by multiplying by the ten to the minus six:
[tex]Q=0.00016C[/tex]Therefore, the charge is 0.00016 Coulomb.