Final answer:
The atomic mass of 'A' in the given compound (ACl₂) is calculated by subtracting the combined atomic mass of Chlorine (2*35.5 g/mol = 71 g/mol) from the total atomic mass of the compound (94 g/mol). This results in an atomic mass for 'A' of 23 g/mol, meaning 'A' could be Sodium (Na).
Step-by-step explanation:
The chemical formula provided is ACl₂, which signifies that the compound contains one atom of A and two atoms of chlorine (Cl). According to the provided information, the atomic mass of Cl is 35.5 g/mol. Considering that there are two atoms of Cl in the compound, the total contribution of Cl to the atomic mass of the compound would be 2 * 35.5 = 71 g/mol.
Now, given that the total atomic mass of the compound ACl₂ is 94 g/mol, we can find the atomic mass of 'A' by subtracting the total atomic mass contribution of Cl from the total atomic mass of the compound. Therefore, atomic mass of 'A' = total atomic mass of ACl₂ - total atomic mass of Cl = 94 g/mol - 71 g/mol = 23 g/mol.
So, 'A' could be an element with atomic mass 23 g/mol such as Sodium (Na). This is how you can calculate the atomic mass of an element in a compound when given an incomplete chemical formula and the total atomic mass of the compound.
Learn more about Atomic Mass Calculation