The molar mass of Copper(II) Nitrate, represented as Cu(NO₃)₂, is 187.56 grams per mole.
To calculate this, we start by determining the molar masses of each constituent element. Copper (Cu) has a molar mass of approximately 63.55 g/mol. The nitrate ion (NO₃) has a molar mass calculated as follows:
- Nitrogen (N) = 14.01 g/mol
- Oxygen (O) = 16.00 g/mol, and since there are three oxygen atoms, we multiply this by three, giving 48.00 g/mol.
Thus, the molar mass of one nitrate ion (NO₃) is:
14.01 g/mol + 48.00 g/mol = 62.01 g/mol.
Since there are two nitrate ions in Copper(II) Nitrate, we multiply the molar mass of one nitrate ion by two:
2 x 62.01 g/mol = 124.02 g/mol.
Now, we can add the molar mass of copper to the total molar mass of the two nitrate ions:
63.55 g/mol (Cu) + 124.02 g/mol (2 NO₃) = 187.57 g/mol.
Therefore, the total molar mass of Copper(II) Nitrate is approximately 187.56 g/mol.