ms1 = 350 g, w1% = 2%, ro = 1,03 g/mL
md2 = 3g
V.apa = 1 L (ro.apa = 1,0 g/mL)
=> m.apa = 1000 g
stim ca c% = mdx100/ms
=> md1 = ms1xw1%/100
= 350x2/100 = 7 g AlCl3
md.tot = md1 + md2 = 7 + 3 = 10 g AlCl3
ms.tot = ms1 + md2 + m.apa = 350+3+1000
= 1353 g
=> w%.final = md.totx100/ms.tot
= 10x100/1353 = 0,74%