- find the mass you need
- con'c > moles > mass
- when you add water, the con'c decreases
- if the volume is doubled, the con'c is halved
- when the water is heated and evaporates, the volume decreases and the con'c is doubled
Volume 1/2x = con'c 2x (when water is heated and evaporates)
Formula for both concentrations and volume:
C1 x V1 = C2 x V2
(concentration 1 muliplied by volume 1 = concentration 2 multiplied by volume 2)
- this formula is basically like math, isolating to get the variable by itself
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