Question

use the equation and the table to answer the question.
fecl₃ + 3h₂o → fe(oh)₃ + 3hcl
atomic masses of elements
element mass of an atom (amu)
fe 56
cl 35
h 1
o 16
iron chloride and water react according to the equation shown. the table shows the atomic masses of the elements involved in the reaction. what is the total mass of the reactants?
(1 point)
179 amu
215 amu
108 amu

Explanation:

Step1: Calculate mass of \(FeCl_3\)

Mass of \(FeCl_3=56 + 3\times35=56 + 105 = 161\) amu

Step2: Calculate mass of \(3H_2O\)

Mass of \(H_2O=(2\times1)+16 = 18\) amu. Mass of \(3H_2O = 3\times18=54\) amu

Step3: Calculate total mass of reactants

Total mass of reactants \(=161+54 = 215\) amu

Answer:

215 amu