Question

rezolvati va rog problema

Answer 1

(ro) p = ms / Vs, p = 0,598 g/ml = 598 g/L

=> ms.initial = pxVs = 598x1 = 598 g sol alcool

c%.initiala = 21,65% , c% = mdx100/ms

=> md = ms.initilxc%.initial/100 = 598x21,65/100

=> md = 129,467 g

ms.final = ms.init. + m.apa

m.apa = 1830 ml x 1 g/ml = 1830 g

=> ms.finala = 598 + 1830 = 2428 g

=> c%.final = 129,467x100/2428 = 5,33 %