Question

Which of the following equations will give the correct formula mass of the compound Fe(ClO4)2? 55.8 u + 2(35.45 u) + 8(16.00 u) 2(55.8 u) + 2(35.45 u) + 8(16.00 u) 55.8 u + 4(35.45 u) + 8(16.00 u) 55.8 u + 2(35.45 u) + 2(16.00 u)

Answer 1

Mass of Fe atom = 55.8 u, number of Fe atoms = 1, Total mass of Fe atoms = 55.8 u...............(1)

Mass of Cl atom = 35.45 u, number of Cl atoms = 2, Total mass of Cl atoms = 2(35.45 u).........(2)

Mass of O atom = 16 u, number of O atoms = 8, Total mass of O atoms = 8(16.00 u)................(3)

Total mass of compound = Total mass of Fe atoms + Total mass of Cl atoms + Total mass of O atoms = (1)+(2)+(3)

Total mass of compound = 55.8 u + 2(35.45 u) + 8(16.00 u)