$n_X=0,06 mol$$n_{lk \pi }=\frac{2.9+2-14}{2}=3$
$+AgNO_3/NH_3\rightarrow Ag\downarrow\Rightarrow HCOONa\Rightarrow m_{max}\Leftrightarrow n_{HCOONa max}$
$\Rightarrow X:C_3H_5(OOCH)_2(OOCC_3H_7)\Rightarrow n_{HCOONa}=0,12 mol$
$\Rightarrow n_{Ag}=0,24 mol\Rightarrow m=25,92 gam$