Ile gramów 25% roztworu LiOH należy dodać do 100 gramów 10% roztworu tego związku aby otrzymać roztwór 15%?
xg 25% ..................... 15-10=5
..................15%
100g 10% ................ 25-15=10
x/100 = 5/10
10x = 500 /:10
x = 50g
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xg 25% ..................... 15-10=5
..................15%
100g 10% ................ 25-15=10
x/100 = 5/10
10x = 500 /:10
x = 50g