pV=nr moli*R*T
nr moli = p*V/R*T = 2*73,846/0,082*300=>nr moli = 6 moli acetilena
CaC2 + 2 H2O ---> C2H2 + Ca(OH)2
randamentul = nr moli practic/nr moli teoretic =>nr moli teoretic = 6/60 * 100 = 10 moli
1 mol CaC2....1 mol C2H2
x moli CaC2.......10 moli C2H2 x = 10 moli CaC2 = 10*64 g = 640 g Cac2
puritatea=masa pura/masa impura * 100=>masa pura = 640/64 * 100 = 1000 g CaC2