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

Question

be?(1 point)
Responses

73 amu
73 amu

107 amu
107 amu

75 amu
75 amu

219 amu

Answer 1

To calculate the atomic mass of Fe(OH)₃, we need to consider the contributions from each element in the compound.

1. Iron (Fe): 1 atom × 56 amu = 56 amu
2. Oxygen (O): 3 atoms × 16 amu = 48 amu (since there are 3 OH groups)
3. Hydrogen (H): 3 atoms × 1 amu = 3 amu (again, from the 3 OH groups)

Now we can sum these values:

• Iron: 56 amu
• Oxygen: 48 amu
• Hydrogen: 3 amu

Total = 56 amu + 48 amu + 3 amu = 107 amu

Therefore, the atomic mass of Fe(OH)₃ is 107 amu.