Use the equation and the table to answer the 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
215 amu
215 amu
108 amu
108 amu
161 amu
161 amu
179 amu
The total mass of the reactants can be calculated by adding up the atomic masses of each element in the reactants:
FeCl3: (1 Fe x 56 amu) + (3 Cl x 35 amu) = 56 amu + 105 amu = 161 amu
H2O: (2 H x 1 amu) + (1 O x 16 amu) = 2 amu + 16 amu = 18 amu
Total mass of reactants: 161 amu (FeCl3) + 18 amu (H2O) = 179 amu
Therefore, the total mass of the reactants is 179 amu.