\(a.n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\\ n_{SO_2}=\dfrac{6,4}{64}=0,1\left(mol\right)\\ V_X=\left(1,5+2,5+0,2+0,1\right).22,4=96,32\left(l\right)\\b. m_X=1,5.32+2,5.28+0,2.2+6,4=124,8\left(g\right)\)
a.nH2=1,2.10236.1023=0,2(mol)nSO2=6,464=0,1(mol)VX=(1,5+2,5+0,2+0,1).22,4=96,32(l)b.mX=1,5.32+2,5.28+0,2.2+6,4=124,8(g)