Final answer:
The question involves calculating the mass of chloride ions in 8.45 g of calcium chloride, using the molar masses of chloride ions (Clⁱ) and calcium chloride (CaCl₂).
Step-by-step explanation:
The question is seeking to find out how many grams of chloride are present in 8.45 g of calcium chloride (CaCl₂). To determine the amount of chloride in the compound, we need to look at the molar mass of CaCl₂, which is approximately 110.98 g/mol, as well as the molar mass contribution of the chloride ions within that compound. Calcium has a molar mass of about 40.08 g/mol, which means that the remaining mass is due to the two chloride ions (110.98 g/mol - 40.08 g/mol = 70.90 g/mol for 2 Clⁱ ions).
To find the mass of chloride ions in 8.45 g of CaCl₂, we use the ratio of the molar mass of chloride to the molar mass of calcium chloride:
(70.90 g Cl₂/110.98 g CaCl₂) × 8.45 g CaCl₂ = X g Cl₂
The calculation yields the mass of chloride ions present in the original 8.45 g of calcium chloride.