calculate number of ions of chloride in 444g of calcium chloride
mols CaCl2 = grams/molar mass.
mols Cl^- = twice that since there are 2 mols Cl^- for every mols CaCl2.
Then there are 6.02E23 Cl^- for every mol Cl^-.
To calculate the number of ions of chloride in calcium chloride, we first need to determine the formula for calcium chloride and the molar mass of calcium chloride.
The chemical formula for calcium chloride is CaCl2, indicating that each calcium chloride molecule contains two chloride ions (Cl-).
Step 1: Calculate the molar mass of calcium chloride
To calculate the molar mass of calcium chloride, we need to multiply the atomic mass of each element by the number of atoms present and sum their masses.
- Calcium (Ca): The atomic mass of calcium is 40.08 g/mol.
- Chlorine (Cl): The atomic mass of chlorine is 35.45 g/mol.
Now, sum up the atomic masses:
Molar mass of CaCl2 = (40.08 g/mol) + 2 * (35.45 g/mol) ≈ 110.98 g/mol
Step 2: Calculate the number of moles of calcium chloride
To calculate the number of moles, we will use the formula:
Number of moles = Mass / Molar mass
Number of moles of CaCl2 = 444 g / 110.98 g/mol
Calculating this value, we get:
Number of moles of CaCl2 ≈ 3.999 mol
Step 3: Calculate the number of ions of chloride
Since each molecule of calcium chloride (CaCl2) contains two chloride ions, we can multiply the number of moles of calcium chloride by 2 to find the number of chloride ions.
Number of ions of chloride = Number of moles of CaCl2 * 2
Substituting the value, we get:
Number of ions of chloride ≈ 3.999 mol * 2
Calculating this, we find:
Number of ions of chloride ≈ 7.998
Therefore, there are approximately 8 ions of chloride in 444g of calcium chloride.