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
161 amu
161 amu
108 amu
108 amu
179 amu
179 amu
215 amu
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.