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Molarity Formula:
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Molarity (M) is a measure of the concentration of a solute in a solution, defined as the number of moles of solute per liter of solution. It is one of the most commonly used units of concentration in chemistry and physiology.
The calculator uses the molarity formula:
Where:
Explanation: The formula calculates the concentration by dividing the amount of substance (in moles) by the volume of the solution (in liters).
Details: Molarity is crucial in preparing solutions for experiments, medical treatments, and pharmaceutical preparations. It allows scientists and healthcare professionals to accurately control the concentration of substances in solutions.
Tips: Enter the moles of solute and volume of solution. Both values must be positive numbers, with volume greater than zero.
Q1: What's the difference between molarity and molality?
A: Molarity is moles per liter of solution, while molality is moles per kilogram of solvent. Molarity is temperature-dependent, while molality is not.
Q2: How do I convert between molarity and other concentration units?
A: Conversions require knowing the molecular weight of the solute and sometimes the density of the solution. Specific conversion formulas exist for common conversions.
Q3: Why is molarity important in physiology?
A: Molarity is critical for preparing intravenous solutions, medications, and laboratory reagents used in physiological experiments and medical treatments.
Q4: Can molarity be used for gases?
A: While possible, molarity for gases is less common due to their compressibility. Concentration of gases is typically expressed in partial pressures or other units.
Q5: What are typical molarity ranges in physiological solutions?
A: Physiological saline is about 0.15 M NaCl, while glucose solutions for IV administration typically range from 0.15-0.5 M depending on the clinical application.