Question

ПОМОГИТЕ СРОЧНО!!!!!!!

Answer 1

Ответ:

1. Mr(N₂ О₅) = 2 * Ar (N) + 5 * Ar (O) = 2*14+5*16=108

2. Mr(P₂ О 3 ) = 2 * Ar (P) + 3 * Ar (O) = 2*31+3*16=110

3. Mr(S O₂ ) = 1 * Ar (S) + 2 * Ar (O) = 1*32+2*16=64

4. Mr( H3 PO4  ) = 3 * Ar (H) + 1 * Ar (P) + 4 * Ar (O) = 3*1+1 *31 + 4*16=98

5. Mr(Zn(NO3) 2 ) = 1 * Ar (Zn) + 2 *( 1 * Ar (N) + 3* Ar (O) = 1 *65 + 2*( 1 * 14 + 3 * 16) = 189

Объяснение: