Question

Ce concentratie va avea solutia formata din 400 g solutie 60% si 200 g de apa?​

Answer 1

c 1 = 60%

ms = 400g

mapa = 200g

c= md/ms × 100

60 = md/400 × 100

md = (60×400):100

md = 240 g

ms2 = md + mapa = 240 + 200 = 440g

c= md/ms × 100

c= 240/440 × 100

c = 63,(63)%