Respuesta :

First write down the chemical formula:

Fe(NO3)3 + K2S

Then, to determine the products use the AD+CB method to form your products:

A = Fe
B = (NO3)3
C = S
D = K2

Products: Fe2S3 + KNO3

Whole equation:

Fe(NO3)3 + K2S -> Fe2S3 + KNO3

Write the balanced chemical equation:

2 Fe(NO3)3 + 3 K2S -> Fe2S3 + 6 KNO3