5. 1654.6 mg=underline ( )g

## Step 1: Conversion Factor<br />### We know that 1 g = 1000 mg. Therefore, to convert mg to g, we multiply by the conversion factor $\frac{1 \text{ g}}{1000 \text{ mg}}$.<br /><br />## Step 2: Calculation<br />### Multiply the given value in mg by the conversion factor: $1654.6 \text{ mg} \times \frac{1 \text{ g}}{1000 \text{ mg}} = \frac{1654.6}{1000} \text{ g} = 1.6546 \text{ g}$.