Question

VALENDO 30 PONTOS: Calcule as seguintes massas musculares: a) H2CaBr
b)H3NaSO4
c)H4Al2(SO4)
d)HClO5
e) H2Fe2(N3
f)(NH4)2Cr2O7
g)H3AlF3
h)H4BaCl2
i)H3AuCl
j)H2K2N(C2I3)3

Answer 1

Resolução:

a) H2CaBr =  1 x 2 + 40 + 80 = 122 g/mol

b) H3NaSO4 = 1 x 3 + 23 + 32 + 16 x 4 = 122 g/mol

c) H4Al2(SO4) =  1 x 4 + 27 x 2 + 32 x 1 + 16 x 4 = 154 g/mol

d) HClO5 = 1 + 35,5 + 16 x 5 = 116,5 g/mol

e) H2Fe2(N3) = 1 x 2 + 55,5 x 2 + 14 x 3 =  155 g/mol

f) (NH4)2Cr2O7 = 14 x 2 + 1 x 8 + 52 x 2 + 16 x 7 = 252 g/mol

g) H3AlF3 = 1 x 3 + 27 x 1 + 19 x 3 =  87 g/mol

h) H4BaCl2 = 1 x 4 + 137 x 1 + 35,5 x 2 = 212 g/mol

i) H3AuCl = 1 x 3 + 197 x 1 + 35,5 = 235,5 g/mol

j) H2K2N(C2I3)3 = 1 x 3 + 39 x 2 + 14 x 1 + 12 x 6 + 127 x 9 = 1310 g/mol

espero ter ajudado!.