There is no equivalence.
A gram is a measure of mass. A milliitre is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.
If you are not convinced, consider a millilitre of air. How many grams? Next consider a millilitre of Mercury. How many grams?
The masses of equal volumes of the two substances will clearly be very different. So there is no direct conversion between mass and volume: you need to know the density of the substance to enable you to carry out the conversion.
One cup is 250 grams. So 45 gm is about 1/6 of a cup
45mL of plain water has a mass of about 45 grams.
45 grams is 1.59 ounces.
143 ml of water is 143 grams
37 ml of water is 37 grams.
70 grams of water is 70 ml.
That cannot be determined, for grams is a unit of weight and mL is a unit of volume.
They are equal: 45 cm3 or cc = 45 mL
The density of the material is its mass divided by its volume. In this case, the density would be 180 grams / 45 mL = 4 grams/mL.
There are 4500 deciliters in 45 milliliters.
There's a thousand grams in a kilogram, 45 grams is 0.045 kilograms.
5 ml