Răspunsuri

  • CH4
  • Ambiţios
2014-11-13T14:30:48+02:00
CuO + H2SO4 ---> CuSO4 + H2O
80 g CuO.........98 g H2SO4
8 g CuO...............x g H2SO4
x = 9,8 g
c%=md/ms*100=>ms = 9,8/10 * 100 = 98 g solutie => raspunsul D