To convert an amount from milligrams to milliequivalents, convert the amount given into millimoles by calculating the atomic weight and dividing it by the amount of the substance in milligrams. Then, multiply the amount in millimoles by the valence number to get the amount in milliequivalents.
Continue ReadingThe periodic table is used to determine the atomic weight of a given substance. For example, if you are asked to convert 300 milligrams of sulfate to milliequivalents, you would look at the atomic weight listed for each element and add the numbers together. The formula for sulfate is SO4^--, so the atomic weight is 32 + (16 * 4) = 96 grams per mole. Since the conversion rate for grams per mole to milligrams per millimole is 1:1, the atomic weight in milligrams per millimole is 96.
Divide the amount of the given substance by its atomic weight. For 300 milligrams of sulfate, the result is 300 milligrams divided by 96 milligrams per millimole equals 3.125 millimoles.
If the substance being converted is a cation or anion, multiply its amount in millimoles by the number of charges to determine the amount in milliequivalents. If there is no charge on the substance, the amount in millimoles is the milliequivalent. Sulfate is an anion with a -2 charge, so the final equation is 3.125 millimoles * 2 = 6.25 milliequivalents.
The number of milligrams in 1 teaspoon varies according to the density of the substance being measured. Milligrams are a unit of weight; the teaspoon is a unit of volume equivalent to 5 milliliters. These measurements are part of the modern metric system established by the International System of Units.
Full Answer >Since milliliters measure volume and milligrams measure mass, it is necessary to know the density of the substance to convert between the two. The formula mass equals volume times density calculates the conversion.
Full Answer >In order to convert milligrams to milliliters, one must know the density of the substance; if the density is measured in milligrams per milliliter, the milligrams of mass of the object being measured are divided by the density of the substance to determine the volume in millimeters. Because density is generally not listed in milligrams per milliliter, it is likely that some calculations must be done to convert the density into the appropriate units.
Full Answer >The difference between mg and mcg is in terms of value, with 1 mg being equivalent to 1000 mcg. These abbreviations stand for milligram and microgram respectively.
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