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| Milligram-Milliequivalent Conversions and Atomic Weights a
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Ion
|
Atomic Weight
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Valence
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Hydrogen (H)
|
1
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1
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Carbon (C)
|
12
|
4
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Nitrogen (N)
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14
|
3
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Oxygen (O)
|
16
|
2
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Sodium (Na)
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23
|
1
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Magnesium (Mg)
|
24
|
2
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Phosphate (P)b
|
31
|
3, 5
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Chlorine (Cl)
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35.5
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1
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Potassium (K)
|
39
|
1
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Calcium (Ca)
|
40
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2
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a The milliequivalent (mEq) is the unit of measure often used for electrolytes. It indicates the chemical activity, or combining power, of an element relative to the activity of 1 mg of hydrogen. Thus, 1 mEq is represented by 1 mg of hydrogen (1 mole) or 23 mg of Na+, 39 mg of K+, etc.
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b As phosphorus, inorganic
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Last full review/revision March 2012
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