Răspunsuri

2014-09-30T22:02:12+03:00
CxHyClz + z Na ---> CxHy + z NaCl
NaCl + AgNO3 ---> NaNO3 + AgCl
58,5 g NaCl........143,5 g AgCl
x g NaCl............2,87 g AgCl      x = 1,17 g NaCl
1,27 g CxHyClz........z,*58,5 g NaCl
1,27 g CxHyClz..........1,17 g NaCl => x = 2 => CxHyCl2
44 g CO2........12 g C
1,76 g CO2.........x g C      x = 0,48 g C
masa H = 1,27-0,48-0,71 = 0,08 g H
Din cele 3 mase => formula moleculara C4H8Cl2
Daca nu intelegi imparti fiecare masa de H,C si Cl la masa lor atomica si vei obtine