Question

Ache as massas moleculares das seguintes substâncias
A= H4fe(Cn)6
B=Ca(HSo4)2
C= Fe(p2O7)3

Answer 1

Olá!

a) $H_4Fe(CN)_6$

$H \to 1 * 4 = 4 \\ Fe \to 56 * 1 = 56 \\ C \to 12 * 6 = 72 \\ N \to 14 * 6 = 84$

Massa molecular: $4+56+72+84 = 216 g/mol$

b) $Ca(HSO_4)_2$

$Ca \to 40 *1 = 40 \\ H \to 1 * 2 = 2 \\ S \to 32 * 2 = 64 \\ O \to 16 * 8 = 128$

Massa molecular: $40+2+64+128 = 234 g/mol$

c) $Fe(P_2O_7)_3$

$Fe \to 56 * 1 = 56 \\ P \to 31 * 6 = 186 \\ O \to 16 * 21 = 336$

Massa molecular: $56+186+336 = 578 g/mol$