Q:
# How do you convert PPM to mg/L?

A:
### Quick Answer

**To convert parts per million to milligrams per liter, use the conversion factor of 1 ppm = 1 mg/L.** This means that 1 part per million is equal to 1 milligram per liter.

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Milligrams per liter is an important unit of measure that illustrates the concentration of dissolved substances. This unit of measure is a ratio of mass or weight per volume. This differs from parts per million, which instead is a measure of weight per weight or mass per mass.

The unit parts per million is used when there is a very low concentration of a solution. One gram of a solution in 1000 milliliters equals 1000 parts per million. When the mass of the solution is reduced to 1/1000 of a gram in 1000 milliliters, this equals 1 part per million. Because 1000 milliliters equals one liter, 1 part per million is 1 milligram per liter.

One part per million only equals 1 milligram per liter in the event that the solvent is water. This is a direct result of water's gravity, which is very close to one. When the solute, or the substance dissolved in the solution, is less than 1 percent, it can be assumed that the liter of water weighs 1,000 grams, which is equal to 1 million milligrams.

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Q:
## How do you convert 90 centimeters to inches?

A:

Full Answer >**To convert 90 centimeters to inches, multiply 90 centimeters by the conversion factor of 0.39 centimeters per inch.**The conversion equals 35.43 inches, according to Convert Units.Filed Under: -
Q:
## How do you convert millimeters to feet?

A:Using the conversion factor 304.8 millimeters equals 1 foot allows one to convert millimeters to feet. For instance, to find the number of feet in 762 millimeters, divide 762 millimeters by 304.8 millimeters per foot. The result is 2.5 feet.

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Q:
## How do you convert 4 pounds to grams?

A:To convert any given number of pounds into grams, you must know the proper conversion factor between pounds and grams, and how to set up and solve a basic unit conversion problem. The conversion factor between pounds and grams is .002205 pounds for every gram, or 453.5 grams for every pound. These should be written as fractions when solving a conversion problem (1 g/.002205 lbs or 453.5 g/1 lbs).

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Q:
## How do you convert 51 kg to lbs?

A:Converting from 51 kilograms to pounds can be solved as a simple unit conversion problem, so long as you know what the conversion factor between pounds and kilograms is. There are 2.2046 pounds for every kilogram and .454 kilograms for every pound. These can be written as fractions: 2.2046 lbs/1 kg (also, 1 kg/2.2046 lbs) or 1 lb/.454 kg (also, .454 kg/1 lb).

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