The number of milligrams in 1 cubic centimeter (cc) depends on the substance being measured. This is because milligrams measure mass, while cubic centimeters measure volume. To determine the number of milligrams in 1 cc, you need to know the density of the substance.
For water, which has a density of 1 gram per cubic centimeter (g/cc), 1 cc of water is equal to 1,000 milligrams (mg). This is because 1 gram is equivalent to 1,000 milligrams.
However, for other substances, the conversion will be different. For example, if you have a substance with a density of 0.8 g/cc, then 1 cc of that substance would be equal to 800 milligrams.
In summary, to find out how many milligrams are in 1 cc, you need to know the density of the substance in question. For water, 1 cc equals 1,000 milligrams.