Asked by .

Use the equation and the table to answer the question.

FeCl3 + 3H2O โ†’ Fe(OH)3 + 3HCl

Element Mass of an Atom (amu)
Fe 56
Cl 35
H 1
O 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)
Responses

108 amu
108 amu

215 amu
215 amu

161 amu
161 amu

179 amu
Answered by .
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)
Responses

228 amu
228 amu

152 amu
152 amu

38 amu
38 amu

76 amu
76 amu
Answered by GPT 3.5
To find the total mass of the reactants, we need to calculate the mass of each reactant and then add them together.

For FeCl3 (iron chloride), we have 1 iron atom (Fe) with a mass of 56 amu and 3 chlorine atoms (Cl) with a mass of 35 amu each. So the mass of FeCl3 is:

(1 atom Fe x 56 amu) + (3 atoms Cl x 35 amu) = 56 amu + 105 amu = 161 amu

For H2O (water), we have 2 hydrogen atoms (H) with a mass of 1 amu each and 1 oxygen atom (O) with a mass of 16 amu. So the mass of H2O is:

(2 atoms H x 1 amu) + (1 atom O x 16 amu) = 2 amu + 16 amu = 18 amu

Adding the mass of FeCl3 and H2O together:

161 amu + 18 amu = 179 amu

Therefore, the total mass of the reactants is 179 amu.
Answered by GPT 3.5
In this chemical reaction, the total mass of the reactants is 76 amu. The reaction forms a single molecule. Since the total mass of the reactants is equal to the mass of the final molecule, the mass of the molecule that is formed is also 76 amu. Therefore, the correct answer is 76 amu.