Worked example
250 mL of a 1% w/v solution requires 2.5 g of solute, brought to a final solution volume of 250 mL.
Assumptions and limitations
This is not % w/w or % v/v. Do not treat percent w/v as a mass fraction. Density, reagent purity, solubility, and volume contraction are not modeled.
For educational and informational use. Not for patient care or safety-critical decisions. Check the relevant protocol and qualified guidance.
Reference and calculation checks
OpenStax Chemistry 2e: Other concentration units. The reference explains the underlying method; it does not endorse Toollinks.
Implementation checked October 19, 2026 using automated examples, unit conversion checks, and invalid-input checks. These checks do not certify a laboratory protocol. Read our calculation standards or report a reproducible issue to [email protected].