Final answer:
The molar mass of Zn(NO3)2 is 189.39 g/mol.
Step-by-step explanation:
The molar mass of Zn(NO3)2 can be calculated by summing the molar masses of its constituent elements. The molar mass of Zn is 65.39 g/mol, and the molar mass of NO3 is 62.00 g/mol. Since there are two NO3 groups in Zn(NO3)2, we multiply the molar mass of NO3 by 2. Calculating the molar mass:
Molar mass of Zn(NO3)2 = Molar mass of Zn + (2 x Molar mass of NO3)
Molar mass of Zn(NO3)2 = 65.39 + (2 x 62.00) = 189.39 g/mol