Final answer:
The formula mass of disulfur dichloride (S₂Cl₂) is calculated by adding the atomic masses of sulfur and chlorine according to the formula, resulting in 135.04 amu.
Step-by-step explanation:
The formula mass of a compound is the sum of the atomic masses of all atoms present in the formula of the compound. In this case, S²Cl² seems to be a typo since it does not coincide with any known chemical formula.
However, if you meant SCl₂, we will proceed to calculate the formula mass for disulfur dichloride (S₂Cl₂). To find the formula mass of S₂Cl₂, we will add the atomic masses of sulfur and chlorine as per the formula:
Formula mass of S₂Cl₂ = (2 × Atomic mass of Sulfur) + (2 × Atomic mass of Chlorine).
The atomic masses can be found on the periodic table:
- Sulfur (S) = approximately 32.07 amu
- Chlorine (Cl) = approximately 35.45 amu
Thus, the calculation is:
Formula mass of S₂Cl₂ = (2 × 32.07 amu) + (2 × 35.45 amu) = 64.14 amu + 70.90 amu = 135.04 amu.