What is the molar mass of calcium acetate, Ca(C2H3O2)2Ca𝐶2𝐻3𝑂22 ? 198.26gmol−1198.26𝑔mol−1 125.17gmol−1125.17𝑔mol−1 123.15gmol−1123.15𝑔mol−1 139.21gmol−1139.21𝑔mol−1 158.18gmol−1158.18𝑔mol−1

To find the molar mass of calcium acetate, Ca(C2H3O2)2, you need to add up the molar masses of each individual atom in the compound.

1. The molar mass of calcium (Ca) is approximately 40.08 g/mol.
2. The molar mass of carbon (C) is approximately 12.01 g/mol. Since there are 4 carbon atoms in the compound (2 per acetate ion, and 2 acetate ions), you multiply 12.01 g/mol by 4 to get 48.04 g/mol.
3. The molar mass of hydrogen (H) is approximately 1.01 g/mol. Since there are 6 hydrogen atoms in the compound (3 per acetate ion, and 2 acetate ions), you multiply 1.01 g/mol by 6 to get 6.06 g/mol.
4. The molar mass of oxygen (O) is approximately 16.00 g/mol. Since there are 4 oxygen atoms in the compound (2 per acetate ion, and 2 acetate ions), you multiply 16.00 g/mol by 4 to get 64.00 g/mol.

Finally, add up all the molar masses:

40.08 g/mol (for Ca) + 48.04 g/mol (for C) + 6.06 g/mol (for H) + 64.00 g/mol (for O) = 158.18 g/mol

So, the molar mass of calcium acetate, Ca(C2H3O2)2, is approximately 158.18 g/mol.