Vm= 22,4l
niu,acetilena= V/Vm= 0,5mol
M,CaC2= 64g/mol
1mol..............................1mol
CaC2 + H2O-----> C2H2 +CaO
x........................................0,5mol
x= 0,5mol CaC2----> m= niuxM= 32gCaC2 PUR
P=m,px100/mi---> mi= 32x100/40g=.........................calculeaza !!!!!
1mol.............2mol
CH≡CH+ 2Br2---> CHBr2-CHBr2
0,5mol..........x= 1mol Br2
c= niu/V-----> V= 5L