Use the equation and the table to answer the question.

Question

FeCIz + 3H20 - Fe(OH)з + 3НСІ
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?
• 215 amu
• 161 amu
• 108 amu
• 179 amu

Answer 1

To find the total mass of the reactants, we need to add up the atomic masses of each individual element in the reactants.

The equation shows that there is one FeCl2 molecule, which has a total atomic mass of 55.85 + (2 * 35.45) = 126.75 amu.

There are also three H2O molecules, each with an atomic mass of (2 * 1.01) + 16.00 = 18.03 amu.

Now we can calculate the total mass of the reactants:
(1 * 126.75 amu) + (3 * 18.03 amu) = 126.75 amu + 54.09 amu = 180.84 amu.

Therefore, the correct answer is 179 amu.