Conversion Formula:
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The conversion from milligrams per liter (mg/L) to millimoles per liter (mmol/L) is a common calculation in chemistry and medical laboratories. It requires knowing the molecular weight (MW) of the substance to convert between mass concentration and molar concentration.
The calculator uses the conversion formula:
Where:
Explanation: This conversion allows you to express concentration in molar terms rather than mass terms, which is often more meaningful in chemical and biological contexts.
Details: Converting between mass and molar concentrations is essential for comparing concentrations of different substances, preparing solutions with specific molarities, and interpreting laboratory results in clinical and research settings.
Tips: Enter the concentration in mg/L and the molecular weight in g/mol. Both values must be positive numbers. The result will be displayed in mmol/L.
Q1: Why convert mg/L to mmol/L?
A: Molar concentration (mmol/L) allows for direct comparison of the number of molecules between different substances, which is often more relevant than mass concentration in chemical and biological contexts.
Q2: How do I find the molecular weight?
A: Molecular weight can be found in chemical databases, on safety data sheets, or calculated from the atomic weights of the elements in the compound's formula.
Q3: Can this calculator be used for any substance?
A: Yes, as long as you know the correct molecular weight of the substance. The conversion is valid for any chemical compound.
Q4: What's the difference between mmol/L and mol/L?
A: 1 mol/L = 1000 mmol/L. Millimoles are often used in medical and biological contexts where concentrations are typically lower.
Q5: Are there any limitations to this conversion?
A: The conversion assumes the substance is pure and doesn't account for hydration states or salt forms that might affect the effective molecular weight.