Final answer:
To calculate the molar mass of Ca(Na₃)₂, add up the molar masses of each atom in the formula. In this case, the molar mass of Ca(Na₃)₂ is 178.02 g/mol.
Step-by-step explanation:
To calculate the molar mass of a compound, we need to add up the molar masses of each atom in the formula. In the case of Ca(Na₃)₂, we have 1 calcium (Ca) atom and 6 sodium (Na) atoms. The molar mass of Ca is 40.08 g/mol, and the molar mass of Na is 22.99 g/mol. So, the molar mass of Ca(Na₃)₂ is:
(1x40.08 g/mol) + (6x22.99 g/mol) = 40.08 g/mol + 137.94 g/mol = 178.02 g/mol.
Step 1: Find the atomic masses for each element from the periodic table. For calcium nitrate, these are Calcium (Ca), Nitrogen (N), and Oxygen (O).
Step 2: Multiply the atomic mass of each element by the number of atoms of that element in the formula. For Ca(NO₃)₂, there's 1 atom of Calcium, 2 atoms of Nitrogen, and 6 atoms of Oxygen.
Step 3: Add the totals from Step 2 to find the formula mass. This gives you 1x40.078 g/mol for Calcium, 2x14.007 g/mol for Nitrogen, and 6x15.999 g/mol for Oxygen.
Step 4: The sum of these amounts gives the molar mass of the compound: 40.078 g/mol + 28.014 g/mol + 95.994 g/mol = 164.086 g/mol for Ca(NO₃)₂.
You can then use this molar mass to convert between moles and grams of the substance as needed for various calculations in Chemistry.