Răspuns :

Iszlaiiudit1id

Răspuns:

c = md × 100 / ms = > md = ms × c / 100

md1 = 400 × 10 / 100 = 40 g

md2 = 400 × 50 / 100 = 200 g

md3 = 40 + 200 = 240 g

ms3 = ms1 + ms2 + m H2O = 400 + 400 + 200 = 1000 g

c3 = (md3/ms3) × 100 = 24000 / 1000 = 24%

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