Question

Помогите, пожалуйста)

Answer 1

2) M(C2H6) = 30
v = 15/30 = 0.5
V = 0.5*22.4 = 11.2 
A)
3) M(NaOH)=40
m(NaOH) = 40*3.5 = 140
E)
4) v(O2)= (3.01*10^23)/(6.02*10^23) = 0.5
D)
5) v(N2) = 0.5
V(N2)=0.5*22.4=11.2
D)