Question

Arzand 48kg carbon in oxigen se obtin 176kg de dioxid de carbon.Ce cantitate de oxigen s-a consumat?

Answer 1

C+O2=CO2

M(C)=12*1=12g/mol
m(C)=12g/mol*1mol=12mol
M(CO2)=12*1+16*2=44gmol
m(CO2)=44g/mol*1mol=44g
M(O2)=16*2=32g/mol
m(O2)32g/mol*1mol=32g
48kg pe 12g = x l pe 32 g ⇒x=48kg *32g pe 12 g⇒x=128 kg
raspuns : 128 kg