Use the equation and the table to answer the 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
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.
To determine the total mass of the reactants, we need to calculate the sum of the atomic masses of the elements involved in the reaction.
The atomic masses are as follows:
- Iron (Fe): 55.845 amu
- Chlorine (Cl): 35.453 amu
- Hydrogen (H): 1.008 amu
- Oxygen (O): 16.00 amu
Looking at the equation, we have:
1 FeCIz + 3H20
The atomic mass of FeCIz can be calculated as:
1 * (Fe atomic mass) + 2 * (Cl atomic mass) = 55.845 + 2 * 35.453 = 126.751 amu
The atomic mass of H20 can be calculated as:
3 * (H atomic mass) + 1 * (O atomic mass) = 3 * 1.008 + 16.00 = 19.032 amu
Now, we can calculate the total mass of the reactants by summing the atomic masses of FeCIz and H20:
126.751 + 19.032 = 145.783 amu
Therefore, the total mass of the reactants is approximately 145.783 amu.
None of the answer choices provided matches this result. It is possible that there is an error in the equation or atomic masses given.