Question
From the Periodic table, it can be determined that iron (Fe) has an atomic mass of 56 amu, oxygen (O) has an atomic mass of 16 amu, and hydrogen (H) has a mass of 1 amu. What would the atomic mass of Fe(OH)3
be?(1 point)
Responses
75 amu
75 amu
219 amu
219 amu
73 amu
73 amu
107 amu
The atomic mass of Fe(OH)3 can be determined by adding up the atomic masses of each element in the compound.
Fe: 1 atom * 56 amu/atom = 56 amu
O: 3 atoms * 16 amu/atom = 48 amu
H: 3 atoms * 1 amu/atom = 3 amu
Adding these values together, the atomic mass of Fe(OH)3 is 56 amu + 48 amu + 3 amu = 107 amu.
Therefore, the correct response is 107 amu.