Solutions

The Fixer (rescue a weigh-out)

Weighed the wrong amount? Get the volume to dissolve it in to hit your target.

V = (m / MW) / c_target
Protocol result
⚗ Aliquot
The Fixer (rescue a weigh-out) · V = (m / MW) / c_target · the lab bench, calculated
Fixer✓ V = (m / MW) / c_target
Calculated live

Dissolve it in 4.278 mL to get 0.4 M.

1

You have 1.711 mmol; dissolve to 4.278 mL.

Volume
4.278 mL
Moles
1.711 mmol
Ask Curie
Learn and practise
How do you calculate the Fixer (rescue a weigh-out)?
A worked example with every step shown, and where it usually goes wrong.
Practice problems
Ten problems with worked solutions, every answer computed by this calculator.
Related calculators
Make a solution
Weigh a solid or pipette a liquid: enter what you have, get the bench step.
Hydrate mass adjuster
Protocol assumes one hydrate, you have another? Get the corrected mass.
Ionic strength and activity
I = ½ Σ cz², plus activity coefficients (Debye-Huckel to Davies).
Molarity to normality
N = M × n, with the equivalence factor you confirm for the reaction.
Simple dilution
C₁V₁ = C₂V₂, exactly how much stock and diluent to mix.
Serial dilution
A fold-dilution series, tube by tube.
All 57 calculators
Browse the full catalog by category.
The Fixer (rescue a weigh-out), Aliquot