There can be no equivalence.
A milligram is a measure of mass. A drop 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.
Furthermore, a drop is not a standard size: it depends on the viscosity of the fluid. Also, you may have noticed that in sometimes the drops of water in rain are much larger than at other times.
In any case, consider a drop of air. How many milligrams? Next consider a drop of syrup. How many milligrams?
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.
x + 140mg = 1.2g = 1200mg x = 1200mg - 140mg = 1060mg = 1.06g
30 drops equals how many tsps?
15 tbsp EQUAL HOW MANY DROPS?
Depends how large the drops are.
~60 drops solution: 20 drops/mL * 3 mL = 60 drops
Without counting the drops on the inversions there are 3 drops.
Concentration = 10 mg/ml 140 mg = 140mg/10 mg/ml = 14 ml 1 Teaspoonful = 5 ml 14 ml = 2.8 Teaspoonfuls ~ 3 Teaspoonfuls However, I don't know the accuracy you required. If you need the exact volume, 2.8 Teaspoonfuls are not practical. Then you have to convert 0.8 Teaspoon into drops. 0.8 Teaspoon = 0.8x5 ml = 4 ml 1 ml = 15 drops 4 ml = 4x15 = 60 drops Then the volume is 2 teaspoonfuls and 60 drops. Here also you see counting 60 drops is inconvenient. Then better to take the volume of 3 teaspoonfuls and remove a volume equivalent to 0.2 teaspoons. 0.2 teaspoonful = 0.2 x 5 ml = 1 ml = 15 drops Then; 3 teaspoonfuls minus 15 drops.
150mL is 3,000 drops.
1.0mL = 20 drops
1mL is 20 drops.
16mL is 320 drops.
1 milliliter = 20 drops.