Use the equation and the table to answer the question.

Question

FeCl3 + 3H2O → Fe(OH)3 + 3HCl

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)
Responses

161 amu
161 amu

108 amu
108 amu

179 amu
179 amu

215 amu

Answer 1

To find the total mass of the reactants, you need to calculate the sum of the atomic masses of the elements in FeCl3 and H2O.

Atomic mass of FeCl3 = (atomic mass of Fe) + 3*(atomic mass of Cl) = 56 + 3*(35) = 161 amu

Atomic mass of H2O = 2*(atomic mass of H) + (atomic mass of O) = 2*(1) + 16 = 18 amu

Total mass of the reactants = Mass of FeCl3 + Mass of H2O = 161 amu + 18 amu = 179 amu

Therefore, the total mass of the reactants is 179 amu.