Question

3. As massas molares dos compostos Ba(NO3)2 C4 H8 O2 e CaO são respectivamente: Dados: Ba- 137u; N-14u; O- 16u; C-12u ; H - 1u; Ca- 40u. *
10 pontos
275 g/mol ; 65g/mol ; 56g/mol
261g/mol; 88g/mol ; 56g/mol
288 g/mol; 76 g/mol ; 46g/mol

Answer 1

Resposta:B)261g/mol; 88g/mol ; 56g/mol

Explicação:

Ba(NO3)2--->137.1+14.2+16.6--->137+28+96--->261 g/mol

C4H8O2--->12.4+1.8+16.2--->48+8+32--->88 g/mol

CaO--->40.1+16.1--->40+16--->56 g/mol