n=N/Na =24.08*10^23/6.02*10^23=4моль
m=n*M =40*4=160ГР
<span>NaOH+H2S--->Na2S+H2O</span>
1) 2CH4 (1500°)= C2H2 + 3H2
2) C2H2 + HOH (t, H+, Hg2+)= CH3COH
3) CH3COH + Ag2O (t)= CH3COOH + 2Ag
4) CH3COOH + Cl2 = CH2ClCOOH + HCl
5) CH2ClCOOH + NH3 = CH2NH2COOH + HCl
²⁸ Ni ₅₉ n⁰=59-28=31
²⁸Ni₆₃ n⁰=63-28=35