cp₁ x m₁ + cp₂ x m₂ = cp₃ x m₃
40% x m₁ + 10% x 150g = 20%(m₁ + 150g)
0,4m₁ + 15g = 0,2m₁ + 30g
0,2m₁ = 15g
m₁ = 75g
Należy dodać 75g kwasu o stężeniu 40%
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Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)
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cp₁ x m₁ + cp₂ x m₂ = cp₃ x m₃
40% x m₁ + 10% x 150g = 20%(m₁ + 150g)
0,4m₁ + 15g = 0,2m₁ + 30g
0,2m₁ = 15g
m₁ = 75g
Należy dodać 75g kwasu o stężeniu 40%
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)