Question

Indicati numarul atomilor al fiecarui element din urmatorii compusi: 2H3PO4; 3HClO4

Answer 1

primu compus are:
6-atomi de H
2de P
8 de O
al doilea compus are:
3atomi de H
1 de Cl
12 de O

Answer 2

$2H_3PO_4 \{ \left[\begin{array}{ccc}6 \ atomi \ de \ hidrogen\\ 2 \ atomi \ de \ fosfor\\8 \ atomi \ de \ oxigen\end{array}\right] \\\\\\ 3HClO_4 \{ \left[\begin{array}{ccc}3 \ atomi \ de\ hidrogen\\3 \ atomi \ de \ clor\\12 \ atomi \ de \ oxigen\end{array}\right]$