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 179 amu 179 amu 161 amu 161 amu108 amu
We first need to calculate the molar mass of each reactant and then sum them up to find the total mass of the reactants.
Iron chloride (FeCl3):
Fe: 1 atom x 55.85 amu = 55.85 amu
Cl: 3 atoms x 35.45 amu = 106.35 amu
Total mass of FeCl3 = 55.85 amu + 106.35 amu = 162.20 amu
Water (H2O):
H: 2 atoms x 1.01 amu = 2.02 amu
O: 1 atom x 16.00 amu = 16.00 amu
Total mass of H2O = 2.02 amu + 16.00 amu = 18.02 amu
Total mass of the reactants (FeCl3 + H2O) = 162.20 amu + 18.02 amu = 180.22 amu
Therefore, the total mass of the reactants is 180.22 amu.
215 amu 215 amu 179 amu 179 amu 161 amu 161 amu 108 amu
To calculate the total mass of the reactants, we need to add the individual atomic masses of iron chloride (FeCl3) and water (H2O).
Atomic masses:
Iron (Fe): 55.85 amu
Chlorine (Cl): 35.45 amu
Hydrogen (H): 1.01 amu
Oxygen (O): 16.00 amu
For FeCl3:
Fe: 1 atom x 55.85 amu = 55.85 amu
Cl: 3 atoms x 35.45 amu = 106.35 amu
Total mass of FeCl3 = 55.85 amu + 106.35 amu = 162.20 amu
For H2O:
H: 2 atoms x 1.01 amu = 2.02 amu
O: 1 atom x 16.00 amu = 16.00 amu
Total mass of H2O = 2.02 amu + 16.00 amu = 18.02 amu
Total mass of the reactants (FeCl3 + H2O) = 162.20 amu (FeCl3) + 18.02 amu (H2O) = 180.22 amu
Therefore, the total mass of the reactants is 180.22 amu. The closest option provided is 179 amu. Hence, the total mass of the reactants is 179 amu.