There can be no equivalence.
A milligram (mg) is a measure of mass while parts per million (ppm) is a ratio of the mass of one substance relative to the mass of a mixture of that and other substances. It is a pure number and according to basic principles of dimensional analysis, any attempt at conversion from one to the other is fundamentally flawed.
ppm means mg per litre. mg/l means 100ug/dl. Therefore there are 10 x 10 micrograms per decilitre in ppm. In other words, 10ug/dl is 0.1 ppm.
There are 1 mg for each kilogram of solution you have.
200 mg is 2 g
Write an equation representing the ppm concentration: ppm = mass solute (mg) ÷ volume solution (L) Extract the data from the question: mass solute (NaCl) = 0.0045 g. ... Convert the mass in grams to a mass in milligrams: mass NaCl = 0.0045 g = 0.0045 g × 1000 mg/g = 4.5 mg.
generally, 1 drop of water = 0.05 ml. As density of water is 1g/cm3. This 1 drop = 0.05 mg. OR 1 mg = 20 drops. therefore 200 mg = 200*20 = 4000 drops (approximately).
The amount of chemical to make 200 ppm depends on the final volume of the solution. If you had 1 liter, then it would take 200 mg of chemical (0.2 grams). If you had a lake or a pond, it would take a lot more, and you'd need to know the volume of the lake or the pond.
200 ppm is 0.02%
1 ppm = 1 mass part per 106 mass parts:So 1 mg in 106 mg = 1.0*106 mg = 1.0*103 g = 1.0 kg200 ppm = 200 mg per kg, in water 1.0 kg = 1.0 LitreSo 200 mg/L
5 parts per million (ppm) is the same as 5 milligrams per kilogram (mg/kg) for a solution.
ppm means mg per litre. mg/l means 100ug/dl. Therefore there are 10 x 10 micrograms per decilitre in ppm. In other words, 10ug/dl is 0.1 ppm.
Answer will be (mg/L) as CaCO3 units of ppm are the same as mg/L. Hardness = 2.5(mg Ca/L) + 4.1(mg Mg/L) In this case: 2.5x78.4 + 4.1x104.5 = 624.45 mg/L
1 mg/kg = 1 ppm 1 mg = 1000 micrograms (ug) so 10 ug/kg = 0.01 mg/kg = 0.01 ppm
It remains 200 mg. Placing it anywhere does not change its mass
200 mg.
20mg
200 mg
1000 mg