Question

1. Determine as massas moleculares das substâncias abaixo: dados:

C=12, H=1, O=16, N=14, K=39, Na=23, P=30, Fe=56,5, S=32, Ca=40, Cl=35,5, Ba= 137

a) BaSO4;
b) Na3PO4
c) Ca(ClO3)2
d)KNO3;
e) FePO4
f) (NH4)2SO4
g) (C3H4O3)2
h) Na2SO3
i) Ca3(PO4)2

Answer 1

Resposta:Segue as contas abaixo na explicação

Explicação:

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

b) Na3PO4--->23.3+31.1+16.4--->69+31+64--->164 g/mol

c) Ca(ClO3)2--->40.2+35,5.2+16.6--->80+71+96--->247 g/mol

d)KNO3--->39.1+14.1+16.3--->39+14+48--->101 g/mol

e) FePO4--->56.1+31.1+16.4--->56+31+64--->151 g/mol

f) (NH4)2SO4--->14.2+1.8+32.1+16.4-->28+8+32+64--->132 g/mol

g) (C3H4O3)2--->12.6+1.8+16.6--->72+8+96--->176 g/mol

h) Na2SO3--->23.2+32.1+16.3--->46+32+48--->126 g/mol

i) Ca3(PO4)2--->40.3+31.2+16.8--->120+62+128--->310 g/mol