Question

Вычислить относительную молекулярную массу кремний IV оксид [S и O2]

Answer 1

Дано:                                        Решение:
оксид кремния (ΙV)          Mr (SiO₂) = Ar (Si) + 2*Ar (O) = 28 + 2*16 = 60
SiO₂
Найти:
Mr (SiO₂) - ?                   Ответ: Mr (SiO₂) = 60

Answer 2

Calculating the Relative Molecular Mass of Silicon IV Oxide (SiO2)

To calculate the relative molecular mass of silicon IV oxide (SiO2), we need to consider the atomic masses of the elements involved and their respective quantities in the compound.

The relative molecular mass of a compound is the sum of the relative atomic masses of all the atoms in a molecule.

Atomic Masses of Silicon (Si) and Oxygen (O)

The atomic mass of silicon (Si) is approximately 28.0855 u, and the atomic mass of oxygen (O) is approximately 15.999 u.

Calculating the Relative Molecular Mass of SiO2

The molecular formula for silicon IV oxide is SiO2. To calculate its relative molecular mass, we can use the following formula:

Relative Molecular Mass (SiO2) = (Atomic Mass of Si) + 2 * (Atomic Mass of O)

Substituting the atomic masses of silicon and oxygen into the formula:

Relative Molecular Mass (SiO2) = (28.0855) + 2 * (15.999)

Relative Molecular Mass (SiO2) ≈ 60.0845 u

Therefore, the relative molecular mass of silicon IV oxide (SiO2) is approximately 60.0845 u.

This calculation is based on the atomic masses of silicon and oxygen and their quantities in the compound