Density tables exist online or in many text books for a wide range of substances. You can find a table of density values by searching for “density table,” “liquid density table,” or “solid density table. ” The density of pure water is set at 1000 kg per cubic meter. This is the same as 1000 mg/ml. For comparison, some other common liquids have the following densities:[1] X Research source Alcohol = 800 kg/m3=800 mg/ml Gasoline = 737 kg/m3=737 mg/ml Milk = 1050 kg/m3=1050 mg/ml Mercury = 13590 kg/m3=13590 mg/ml
You may find the density of your substance printed on the bottle. You might check that before contacting the pharmacist.
Volume=massdensity{\displaystyle {\text{Volume}}={\frac {\text{mass}}{\text{density}}}}.
For example, suppose you wish to convert 20,000 milligrams each of water, alcohol, gasoline, milk and mercury into milliliters. 20,000 milligrams is equal to 20 grams, which is about the weight of 20 paper clips. The conversions for these five liquids are as follows: Water: (20,000 mg)/(1000 mg/ml)=20 ml water{\displaystyle (20,000{\text{ mg}})/(1000{\text{ mg/ml}})=20{\text{ ml water}}} Alcohol: (20,000 mg)/(800 mg/ml)=25 ml alcohol{\displaystyle (20,000{\text{ mg}})/(800{\text{ mg/ml}})=25{\text{ ml alcohol}}} Gasoline: (20,000 mg)/(737 mg/ml)=27. 137 ml gasoline{\displaystyle (20,000{\text{ mg}})/(737{\text{ mg/ml}})=27. 137{\text{ ml gasoline}}} Milk: (20,000 mg)/(1050 mg/ml)=19. 048 ml milk{\displaystyle (20,000{\text{ mg}})/(1050{\text{ mg/ml}})=19. 048{\text{ ml milk}}} Mercury: (20,000 mg)/(13590 mg/ml)=1. 4717 ml mercury{\displaystyle (20,000{\text{ mg}})/(13590{\text{ mg/ml}})=1. 4717{\text{ ml mercury}}}
If you know a measurement in milliliters, you can convert to teaspoons by just dividing by 5.
Water: 20,000 mg = 20 ml/5 = 4 teaspoons Alcohol: 20,000 mg = 25 ml/5 = 5 teaspoons Gasoline: 20,000 mg = 27. 137 ml/5 = 5. 4274 teaspoons Milk: 20,000 mg = 19. 048 ml/5 = 3. 8096 teaspoons Mercury: 20,000 mg = 1. 4717 ml/5 = 0. 29434 teaspoons
