Question

Вычислить малекулярную массу вещества kmno4

Answer 1

M(KMnO4) =  39 + 55 + 16*4 = 158 г/моль

Answer 2

Предыдущий ответ верен, могу только пояснить

M(KMnO4) =  Ar(K)+Ar(Mn)+4*Ar(O)=39 + 55 + 16*4 = 158 г/моль

Answer 3

Calculating the Molecular Mass of KMnO4

To calculate the molecular mass of a substance, we need to sum the atomic masses of all the atoms in the molecule. For KMnO4, we have:

- K (Potassium) - Mn (Manganese) - O (Oxygen)

The atomic masses are as follows: - K (Potassium): 39.10 u - Mn (Manganese): 54.94 u - O (Oxygen): 16.00 u

Now, let's calculate the molecular mass of KMnO4:

Molecular Mass of KMnO4: - K: 39.10 u - Mn: 54.94 u - O (4 atoms): 16.00 u * 4 = 64.00 u

Summing these atomic masses gives us the molecular mass of KMnO4: 39.10 u + 54.94 u + 64.00 u = 158.04 u.

This calculation is based on the atomic masses of the elements present in KMnO4.

Conclusion

The molecular mass of KMnO4 is 158.04 u.