Does not convert; one is a measure of weight and the other is a measure of volume.
300ml (milliliters or cc) is 10.14 fluid ounces.
100g
That is 1.323 cups.
That is 20 tablespoons.
300ml
300ml = 10.1442068 US fluid ounces
300mL is 300,000µL
300mL equals 30cL
8L + 300ML = 8300ML or 8.3L
300mL
That is 3/10 of a litre.
If the media is water, it is 300 grams