Calculate molar mass of each chemical: CaCO3, CaCl2, and Na2CO3. Record on data sheet.

Sure, let's calculate the molar mass of each chemical.

1. CaCO3 (Calcium Carbonate):

   • Molar mass of Ca (Calcium) = 40.08 g/mol
   • Molar mass of C (Carbon) = 12.01 g/mol
   • Molar mass of O (Oxygen) = 16.00 g/mol
   • Since there are 3 oxygen atoms in CaCO3, the total molar mass of oxygen = 3 * 16.00 = 48.00 g/mol
   • Therefore, the molar mass of CaCO3 = 40.08 + 12.01 + 48.00 = 100.09 g/mol

2. CaCl2 (Calcium Chloride):

   • Molar mass of Ca (Calcium) = 40.08 g/mol
   • Molar mass of Cl (Chlorine) = 35.45 g/mol
   • Since there are 2 chlorine atoms in CaCl2, the total molar mass of chlorine = 2 * 35.45 = 70.90 g/mol
   • Therefore, the molar mass of CaCl2 = 40.08 + 70.90 = 110.98 g/mol

3. Na2CO3 (Sodium Carbonate):

   • Molar mass of Na (Sodium) = 22.99 g/mol
   • Molar mass of C (Carbon) = 12.01 g/mol
   • Molar mass of O (Oxygen) = 16.00 g/mol
   • Since there are 2 sodium atoms in Na2CO3, the total molar mass of sodium = 2 * 22.99 = 45.98 g/mol
   • Since there are 3 oxygen atoms in Na2CO3, the total molar mass of oxygen = 3 * 16.00 = 48.00 g/mol
   • Therefore, the molar mass of Na2CO3 = 45.98 + 12.01 + 48.00 = 105.99 g/mol

So, the molar masses are:

• CaCO3: 100.09 g/mol
• CaCl2: 110.98 g/mol
• Na2CO3: 105.99 g/mol