Răspunsuri

2014-09-17T17:58:18+03:00
C1=md1/ms1 * 100 => md1 = 500*25/100=125 g
c2=md2/ms2 * 100 => md2 = 500*50/100=250 g
ms2 = ms1 = 500 g
ms2 = md2 + m apa
m apa = 500 - 250 = 250 g apa trebuie evaporata