Urgentttt va rog!!!! Coroana

Răspuns:
niu,Ag= N/N,A= 18,066X10 /6,022X10= 30mol atomi Ag
m=niuxA,Ag= 30x108g= 3240gAg
m= 6x197g= 1182gAu
total masa= 4422g
4422g........1182gAu..........3240gAg
100g.........................x..........................y
x= 26,73% Au
y=73,27%Ag
Explicație: