Question

Вычислить массовые доли элементов в so3 СРОЧНО 30 БАЛЛОВ

Answer 1

Смотри приложение к ответу

Answer 2

Calculating the Mass Percentages of Elements in SO3

To calculate the mass percentages of elements in SO3, we need to consider the molar masses of sulfur (S) and oxygen (O) and then use the chemical formula of sulfur trioxide (SO3) to determine the mass percentages of each element.

The molar mass of sulfur (S) is approximately 32.07 g/mol, and the molar mass of oxygen (O) is approximately 16.00 g/mol.

Using the chemical formula of sulfur trioxide (SO3), we can calculate the mass percentages of sulfur and oxygen in the compound.

The molar mass of SO3 can be calculated as follows: - Sulfur (S): 1 atom - Oxygen (O): 3 atoms

Molar mass of SO3 = (1 * molar mass of S) + (3 * molar mass of O)

Molar mass of SO3 = (1 * 32.07 g/mol) + (3 * 16.00 g/mol) Molar mass of SO3 = 32.07 g/mol + 48.00 g/mol Molar mass of SO3 = 80.07 g/mol

Now, we can calculate the mass percentages of sulfur and oxygen in SO3.

The mass percentage of an element in a compound is calculated using the following formula: Mass percentage = (mass of element in 1 mole of compound / molar mass of the compound) * 100%

Mass Percentages Calculation

- Sulfur (S): - Mass of sulfur in 1 mole of SO3 = 32.07 g - Mass percentage of sulfur in SO3 = (32.07 g / 80.07 g) * 100% = 40.0% - Oxygen (O): - Mass of oxygen in 1 mole of SO3 = 48.00 g - Mass percentage of oxygen in SO3 = (48.00 g / 80.07 g) * 100% = 60.0% Therefore, the mass percentages of elements in SO3 are: - Sulfur (S): 40.0% - Oxygen (O): 60.0%