#### Answer

850 mg

#### Work Step by Step

0.85 g to mg
Unit for the answer (mg) is in numerator; unit being changed (g) is in denominator so it will divide out. The unit fraction is $\frac{1000 mg}{1 g}$.
Multiply 0.85 g times to the unit fraction
0.85 g * $\frac{1000 mg}{1 g}$= 850 mg