Question

Formula empirica de 26,57% k y 38,07% o

Answer 1

K = 26.57 g / 39 g/mol = 0.68 mol
Cr = 35.36 g/ 52 g/mol = 0.68 mol
 O = 38.07 g/ 16 g/mol = 2.38 mol

dividir

K= 0.68 mol / 0.68 mol = 1 x 2 = 2
Cr=0.68 mol / 0.68 mol = 1 x 2 = 2
 O = 2.38 mol / 0.68 mol = 3.5 x 2 = 7

multiplicar por 2, uno de los resultados tiene decimal

FE = K2Cr2O7