Question

Найти молекулярную массу ZnO,HNI^3;Na^2CO^3 решите щяс надо

Answer 1

Molecular Mass Calculation

To find the molecular mass of the given compounds, we can use the atomic masses of the elements present in each compound. The molecular mass is the sum of the atomic masses of all the atoms in a molecule.

1. ZnO (Zinc Oxide): - The atomic mass of Zn (Zinc) is 65.38 g/mol and the atomic mass of O (Oxygen) is 16.00 g/mol. - Therefore, the molecular mass of ZnO is 65.38 + 16.00 = 81.38 g/mol.

2. HNI3 (Hydrazoic Acid): - The atomic mass of H (Hydrogen) is 1.01 g/mol, the atomic mass of N (Nitrogen) is 14.01 g/mol, and the atomic mass of I (Iodine) is 126.90 g/mol. - Therefore, the molecular mass of HNI3 is 1.01 + (14.01 * 3) + 126.90 = 175.94 g/mol.

3. Na2CO3 (Sodium Carbonate): - The atomic mass of Na (Sodium) is 22.99 g/mol, the atomic mass of C (Carbon) is 12.01 g/mol, and the atomic mass of O (Oxygen) is 16.00 g/mol. - Therefore, the molecular mass of Na2CO3 is (22.99 * 2) + 12.01 + (16.00 * 3) = 105.99 g/mol.

So, the molecular masses of the given compounds are: - ZnO (Zinc Oxide): 81.38 g/mol - HNI3 (Hydrazoic Acid): 175.94 g/mol - Na2CO3 (Sodium Carbonate): 105.99 g/mol