oblicz ile gram soli kuchennej i ile wody potrzeba do przygotowania 400gram 25% roztworu?
mr = 400g
cp = 25%
ms = mr x cp/100%
ms = 400g x 25%/100% = 100g
Potrzeba 100g soli i 400g-100g = 300g wody
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Pozdrawiam :)
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mr = 400g
cp = 25%
ms = mr x cp/100%
ms = 400g x 25%/100% = 100g
Potrzeba 100g soli i 400g-100g = 300g wody
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)