A: ### Quick Answer

**If you are converting the mass of a substance from milligrams/kilograms (mg/kg) to parts per million (ppm), then the ratio is 1:1, and no conversion is necessary.** Therefore, 1 mg/kg is the same as 1 ppm because 1 milligram is equal to 0.001 grams while 1 kilogram is equal to 1,000 grams. So, if you divide 0.001 by 1,000, then the result is 0.000001, which is a millionth of a gram, making it the same as 1 part per million.

This logic only works for mass conversions. If you are attempting to convert mg/kg of volume or moles to ppm, then the substances being used will change the outcome. In the case of both volume and moles, ppm is found by using the formula c/s where "c" is the volume or moles of the compound divided by "s," which is the volume or moles of the solution.

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- Q:
## What is the ratio of mass to a volume of substance?

A:

Full Answer >**The ratio of mass to volume of a substance is called density.**Units of measure for density include kilograms per meter cubed and grams per centimeter cubed.Filed Under: - Q:
## How can you convert mg to mEq?

A: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.

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## How do you convert 99 euros to United States dollars?

A:

Full Answer >**Currency rates fluctuate often, so to covert 99 euros into dollars, you must find the most current conversion rate and then multiply that number by 99.**Using the October 20, 2014 exchange rate, 1 euro is equal to approximately 1.28 U.S. dollars. So 99 euros multiplied by the 1.28 conversion rate, is equal to $126.66 USD.Filed Under: - Q:
## What is the Roth conversion rate?

A:The Roth conversion rate is the tax rate applied to funds distributed from a traditional individual retirement account that is being converted into a Roth IRA. Bankrate reports there are several factors to consider when deciding if a conversion from a traditional IRA to a Roth IRA is advantageous.

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