You can't directly convert grams (G) to milliliters (mL) because they measure different things:

* Grams (G) measure mass, which is the amount of matter in an object.

* Milliliters (mL) measure volume, which is the amount of space an object occupies.

To convert grams to milliliters, you need the density of the powder. Density is the mass per unit volume.

Here's how to do it:

1. Find the density of the powder: This information should be provided on the packaging or can be found online.

2. Use the formula: Volume (mL) = Mass (g) / Density (g/mL)

Example:

Let's say the powder has a density of 1.5 g/mL.

* Volume (mL) = 100 g / 1.5 g/mL = 66.67 mL

Therefore, 100 grams of this powder would occupy approximately 66.67 milliliters.