Question

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 215 amu 215 amu 179 amu 179 amu 108 amu 108 amu Skip to navigation

Answer 1

To calculate the total mass of the reactants in the reaction FeCl3 + 3H2O, we will sum the atomic masses of each reactant according to the equation.

1. For FeCl3:

   • 1 atom of Fe = 56 amu
   • 3 atoms of Cl = 3 × 35 amu = 105 amu
   • Total mass of FeCl3 = 56 amu + 105 amu = 161 amu

2. For 3H2O:

   • Each H2O has:
     • 2 atoms of H = 2 × 1 amu = 2 amu
     • 1 atom of O = 16 amu
   • Total mass of one H2O = 2 amu + 16 amu = 18 amu
   • For 3 H2O = 3 × 18 amu = 54 amu

3. Total mass of the reactants:

   • Mass of FeCl3 + Mass of 3H2O = 161 amu + 54 amu = 215 amu

Thus, the total mass of the reactants is 215 amu.