Question

MASSA ATÔMICA ( MA) DADOS PARA RESOLVER A QUESTÃO 4.

H =1

S = 32

O = 16

Cl = 35

N = 14

C = 12

Na = 23

Ag = 108

Ca = 40

Al = 27

Pb = 207

Ba = 137

As = 75

Sn = 11

P = 15



4. Calcule a massa molecular das moléculas abaixo:

a) Al2(SO4)3

b) Ba3 (AsO4)3

c) CaCO2

d) BaSO4

e) SnCl4

f) NaHCO3

g) AgNO3​

Answer 1

4.a) Al₂(SO₄)₃ → 2.27 + 3.32 + 12.16 = 342 gramas.

4.b) Ba₃(AsO₄)₃ → 3.137 + 3.75 + 12.16 = 828 gramas.

4.c) CaCO₂ → 1.40 + 1.12 + 2.16 = 84 gramas.

4.d) BaSO₄ → 1.137 + 1.32 + 4.16 = 233 gramas.

4.e) SnCl₄ → 1.11 + 4.35 = 151 gramas.

4-f) NaHCO₃ → 1.23 + 1.1 + 1.12 + 3.16 = 84 gramas.

4-g) AgNO₃ → 1.108 + 1.14 + 3.16 = 170 gramas.

Answer 2

Resposta:Segue as contas abaixo na explicação

Explicação:

Questão 4

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

b) Ba3 (AsO4)3--->137.2+75.3+16.12--->274+225+192--->691 g/mol

c) CaCO3--->40.1+12.1+16.3--->40+12+48--->100 g/mol

d) BaSO4--->137.1+32.1+16.4--->137+32+64--->233 g/mol

e) SnCl4--->119.1+35,5.4--->119+142--->261 g/mol

     ou

   SnCl4--->119.1+35.4--->119+140--->259 g/mol

f) NaHCO3--->23.1+1.1+12.1+16.3--->23+1+12+48--->84 g/mol

g) AgNO3​--->108.1+14.1+16.3--->108+14+48--->170 g/mol