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
108 amu
108 amu
179 amu
179 amu
215 amu
215 amu
161 amu
To determine the total mass of the reactants, we need to sum the atomic masses of all the elements involved. The equation given is missing, so we cannot provide an accurate answer without it. Please provide the balanced equation for the reaction between iron chloride and water.
To find the total mass of the reactants, we need to add up the atomic masses of iron (Fe) and chlorine (Cl) in iron chloride (FeCl3).
The atomic mass of iron (Fe) is 55.85 amu.
The atomic mass of chlorine (Cl) is 35.45 amu.
Since iron chloride (FeCl3) consists of one iron atom (Fe) and three chlorine atoms (Cl), the total mass of iron chloride is:
(1 * 55.85 amu) + (3 * 35.45 amu) = 55.85 amu + 106.35 amu = 162.2 amu
Therefore, the total mass of the reactants is 162.2 amu.
Thus, the correct answer is:
161 amu
To calculate the total mass of the reactants, we need to add the atomic masses of iron (Fe) and chlorine (Cl). According to the equation given, the reactants are iron chloride (FeCl3) and water (H2O).
The atomic mass of iron (Fe) is 55.85 amu, and there are 3 chlorine atoms (Cl) in iron chloride, so we need to multiply the atomic mass of chlorine by 3. The atomic mass of chlorine (Cl) is 35.45 amu.
For water (H2O), we have 2 hydrogen atoms (H) and 1 oxygen atom (O). The atomic mass of hydrogen is 1.01 amu, and the atomic mass of oxygen is 16.00 amu.
Now, let's calculate the total mass of the reactants:
Iron chloride (FeCl3):
(55.85 amu for Fe) + (3 * 35.45 amu for Cl) = 55.85 amu + 106.35 amu = 162.20 amu
Water (H2O):
(2 * 1.01 amu for H) + (16.00 amu for O) = 2.02 amu + 16.00 amu = 18.02 amu
To find the total mass of the reactants, we add the masses of iron chloride and water:
162.20 amu + 18.02 amu = 180.22 amu
Therefore, the total mass of the reactants is approximately 180.22 amu.
None of the given options match the correct answer. The correct answer should be 180.22 amu.