" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
x g ---- 40%
-------------------
x= 150g*40%/100% =60 g ==> masa substancji
60 g --- 25%
y g --- 100%
---------------------
y=60g*100%/25%=240 g ==> masa roztworu
mr₂ - mr₁ = masa wody potrzebnej do do dolania
240 g - 150 g = 90 g
Należy dolać 90 g wody.