### How do you calculate milligrams of caffeine in 60 mL sample?

You have to know the concentration first. That will either be in grams per milliliter (or milligrams per milliliter), or it could be in moles per liter (molarity). If it's given in grams per milliliter, just multiply that number by 60 and multiply by 1000. If it's given in moles per liter, than first find how many moles in 60 mL by multiplying by 0.06, and then convert moles to grams using the molar mass…

### How do you convert mg per liter to micro moles per liter?

In order to convert between milligrams and micromoles, one has to know the molar mass of the substance in question, then simply convert from grams to moles. As an example, let's assume that the measurement is that of oxygen, or O2, and that there's 10 milligrams per liter. First, divide by 1,000, to convert to grams, in this case, .01 grams. Then, divide this amount by the molar mass, which represents the number of grams…

### What is the abundance of copper in the earth's crust?

Estimated Crustal Abundance: 6.0×101 milligrams per kilogram Estimated Oceanic Abundance: 2.5×10-4 milligrams per liter Estimated Crustal Abundance: 6.0×101 milligrams per kilogram Estimated Oceanic Abundance: 2.5×10-4 milligrams per liter Estimated Crustal Abundance: 6.0×101 milligrams per kilogram Estimated Oceanic Abundance: 2.5×10-4 milligrams per liter

### What is the conversion of milligrams per liter to milligrams?

To convert milligrams per liter (mg/l) to milligrams, you need a volume of the substance in question, and then you'll just multiply the two together. In "math speak" here, ( mg/liter ) times ( liters ) equal mg. See where we're going? The first unit is a density, which is weight (mass) per unit of volume. If you have a density of a material and you have a stated volume of the material, you can…