Question

2) Encontre a massa molecular(MM) do Al 2 (S O 4)

340 u

341 u

342 u

345 u

360 u

3) Encontre a massa molecular(MM) do (N H 4) 2 C O 2

50 u

60 u

70 u

80 u

92 u​

Answer 1

Resposta:2)C)342 u

                3)D)80 u

Explicação:

2)Al2(SO4)3--->27.2+32.3+16.12--->54+96+192-->342 g/mol

3)(NH4)2CO2--->14.2+1.8+12.1+16.2-->28+8+12+32--->80 g/mol