Calculator Molarity | Graphpad

Required mass in grams, milligrams, micrograms, or kilograms. 2. Volume from Mass & Concentration

For example, Emma was working on an experiment that required a 0.5M solution of sodium chloride (NaCl). She knew the molecular weight of NaCl was 58.44 g/mol, and she had a stock solution of 1M NaCl that she wanted to dilute to 0.5M. Using the GraphPad Calculator, Emma entered the values and obtained the result:

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The calculator also provided her with a step-by-step protocol to prepare the solution:

Stock concentration, desired working concentration, desired final volume. Required mass in grams, milligrams, micrograms, or kilograms

Making a fresh buffer or chemical stock from a solid powder raw material.

As Emma's skills improved, she began to help her classmates with their calculations, introducing them to the GraphPad Calculator and showing them how to use it. Soon, the entire lab was using the calculator, and they all benefited from its accuracy and ease of use. She knew the molecular weight of NaCl was 58

Utilizing a precise, pre-weighed aliquot of an expensive or limited compound.