Question

câți atomi se gasesc in 1/2 moli de Ca ,N,O

Answer 1

Vom folosi numarul lui Avogaro,mai exact:6,023*10²³
Acum rezolvam:[tex]1molCa=6,023*10^2^3\\ 0,5moliCa=x\\ =\ \textgreater \ x= 6,023*10^2^3*0,5\\ =\ \textgreater \ x=3,0115*10^2^3atomi.\\\\ 1molN=6,023*10^2^3\\ 0,5moliN=x\\ =\ \textgreater \ x=6,023*10^2^3*0,5\\ =\ \textgreater \ x=3,0115*10^2^3atomi\\\\ 1molO=6,023*10^2^3\\ 0,5moliO=x\\ =\ \textgreater \ x=6,023*10^2^3*0,5\\ =\ \textgreater \ x=3,0115*10^2^3atomi [/tex]