Lab Chemistry
Reagent Molarity & Mass Calculator
Mass (g) = Molarity (M) × Volume (L) × Molecular Weight (g/mol)
Target Output: Mass to Weigh (m)[SOLVED]
4.383
Dry reagent mass to weigh on analytical balance
Desired molar concentration
Final volume in volumetric flask
g/mol
Relative molecular mass of reagent (e.g. NaCl = 58.44)
💡 What This Is Useful For: Preparing growth media, lysis buffers (e.g. 50 mM Tris-HCl, 150 mM NaCl), and dissolving lyophilized chemical powders.
📐 Real-World Worked Example: To prepare 500 mL (0.5 L) of 0.15 M NaCl (MW = 58.44 g/mol): Mass = 0.15 × 0.5 × 58.44 = 4.383 g of NaCl powder.
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Scientifically reviewed by:D Yap, MBiochem (Oxon), DIC, PhD (Lond)
Clinical Medicine Research Scientist · LinkedIn Profile ↗
⚠️ Research Reference Notice: For reference and research education only. Reviewer is a clinical medicine research scientist and not a practicing physician or veterinarian, and does not provide clinical certification or medical advice. Experimental drug doses and clinical measurements must be verified against institutional protocols, primary manufacturer labeling, and physician orders.