For water, 1ml = 1 gram
No, mls (or milliliters) is a measure of volume while grams is a measure or weight or mass.
There is not enough information to determine, because grams is a measure of WEIGHT and mls is a measure of LIQUID. <<<adr>>>
Depends on the substance...if it is water, it will be 750 grams
280 ml of water is 280 grams
none
You divide the grams by the density.
That is approximately 230 grams
The material type and/or density is missing
around 7.5 to 8 grams
342 grams of Lactose in 1 litre water or 34.2 grams in 100 mls.
Not the same but very close.
10g = 10ml of water, other liquids may vary