To find the total mass of the reactants, we need to add up the atomic masses of all the elements on the left side of the equation (the reactant side).
Fe: 1 atom x 56 amu = 56 amu
Cl: 1 atom x 35 amu = 35 amu
H: 3 atoms x 1 amu = 3 amu
O: 3 atoms x 16 amu = 48 amu
Total mass of reactants = 56 amu + 35 amu + 3 amu + 48 amu = 142 amu
Therefore, the total mass of the reactants is 142 amu, so the correct answer is "161 amu".
Use the equation and the table to answer the question.
FeCly + 3H20 -> Fe(OH)3 + 3HCl
Element Mass of an Atom (amu)
Fe
H
56
35
1
16
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)
O 108 amu
• 179 amu
O 215 amu
• 161 amu
5 answers
In a chemical reaction, two molecules with a total mass of 76 amu react to form a single molecule. What is the mass of the molecule that is formed? (1 point)
O 76 amu
O 152 amu
О 38 amu
О 228 аmu
O 76 amu
O 152 amu
О 38 amu
О 228 аmu
In a chemical reaction, the total mass before the reaction is equal to the total mass after the reaction.
Let's assume the mass of the molecule formed after the reaction is x amu.
Total mass before reaction: 76 amu
Total mass after reaction: x amu
According to the law of conservation of mass, we have:
Total mass before reaction = Total mass after reaction
76 amu = x amu
Therefore, the mass of the molecule formed is 76 amu.
So, the correct answer is "76 amu".
Let's assume the mass of the molecule formed after the reaction is x amu.
Total mass before reaction: 76 amu
Total mass after reaction: x amu
According to the law of conservation of mass, we have:
Total mass before reaction = Total mass after reaction
76 amu = x amu
Therefore, the mass of the molecule formed is 76 amu.
So, the correct answer is "76 amu".
Your answers were wrong
I apologize for the incorrect answers earlier. Let's try solving the problem again:
In a chemical reaction, the total mass before the reaction is equal to the total mass after the reaction.
Let's assume the mass of the molecule formed after the reaction is x amu.
Total mass before reaction: 76 amu
Total mass after reaction: x amu
According to the law of conservation of mass, we have:
Total mass before reaction = Total mass after reaction
76 amu = x amu
Therefore, the mass of the molecule formed is 76 amu.
So, the correct answer is "76 amu".
In a chemical reaction, the total mass before the reaction is equal to the total mass after the reaction.
Let's assume the mass of the molecule formed after the reaction is x amu.
Total mass before reaction: 76 amu
Total mass after reaction: x amu
According to the law of conservation of mass, we have:
Total mass before reaction = Total mass after reaction
76 amu = x amu
Therefore, the mass of the molecule formed is 76 amu.
So, the correct answer is "76 amu".
27 answers