Use the equation and the table to answer the question.
FeCl3 + 3H2O → Fe(OH)3 + 3HCl
(Element)Fe = 56(Mass of an Atom(amu)
(Element)Cl = 35(Mass of an Atom(amu)
(Element)H = 1(Mass of an Atom(amu)
(Element) O = 16(Mass of an Atom(amu)
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
A. 108 amu
B. 179 amu
C. 215 amu
D. 161 amu
To find the total mass of the reactants, we need to calculate the mass of each element in the reactants and then add them together.
FeCl3:
Fe = 56 amu
Cl = 3 x 35 amu = 105 amu
Total mass of FeCl3 = 56 amu + 105 amu = 161 amu
H2O:
H = 2 x 1 amu = 2 amu
O = 16 amu
Total mass of H2O = 2 amu + 16 amu = 18 amu
Since there are 3 moles of H2O in the reaction, total mass of H2O = 3 x 18 amu = 54 amu
Total mass of the reactants = Total mass of FeCl3 + Total mass of H2O
= 161 amu + 54 amu
= 215 amu
Therefore, the total mass of the reactants is 215 amu.
So, the correct answer is:
C. 215 amu
are you sure
Let's recheck the calculation for the total mass of the reactants.
FeCl3:
Fe = 56 amu
Cl = 3 x 35 amu = 105 amu
Total mass of FeCl3 = 56 amu + 105 amu = 161 amu
H2O:
H = 2 x 1 amu = 2 amu
O = 16 amu
Total mass of H2O = 2 amu + 16 amu = 18 amu
Since there are 3 moles of H2O in the reaction, total mass of H2O = 3 x 18 amu = 54 amu
Total mass of the reactants = Total mass of FeCl3 + Total mass of H2O
= 161 amu + 54 amu
= 215 amu
Therefore, the total mass of the reactants is indeed 215 amu.
So, the correct answer is:
C. 215 amu