Question

Рассчитайте массовую долю элементов в триоксиде серы SO3Дано : Решение :​

Answer 1

дано

so3

w=x

решение

mr=32+48=80

100-80

x-32

x=40 s

100-40=60 o

Answer 2

Calculation of Mass Fraction of Elements in Sulfur Trioxide (SO3)

To calculate the mass fraction of elements in sulfur trioxide (SO3), we need to know the molar masses of sulfur (S) and oxygen (O), as well as the molar mass of SO3.

The molar mass of sulfur (S) is approximately 32.06 g/mol, and the molar mass of oxygen (O) is approximately 16.00 g/mol.

The molar mass of SO3 can be calculated by adding the molar masses of one sulfur atom and three oxygen atoms: Molar mass of SO3 = (1 * molar mass of S) + (3 * molar mass of O)

Let's calculate the molar mass of SO3:

Molar mass of SO3 = (1 * 32.06 g/mol) + (3 * 16.00 g/mol) Molar mass of SO3 = 32.06 g/mol + 48.00 g/mol Molar mass of SO3 = 80.06 g/mol

Now that we know the molar mass of SO3, we can calculate the mass fraction of each element in SO3.

The mass fraction of an element is the ratio of the mass of that element to the total mass of the compound.

Let's calculate the mass fraction of sulfur (S) in SO3: Mass fraction of S = (molar mass of S * number of S atoms) / molar mass of SO3

Mass fraction of S = (32.06 g/mol * 1) / 80.06 g/mol Mass fraction of S = 32.06 g/mol / 80.06 g/mol Mass fraction of S ≈ 0.400

The mass fraction of sulfur (S) in SO3 is approximately 0.400.

Now let's calculate the mass fraction of oxygen (O) in SO3: Mass fraction of O = (molar mass of O * number of O atoms) / molar mass of SO3

Mass fraction of O = (16.00 g/mol * 3) / 80.06 g/mol Mass fraction of O = 48.00 g/mol / 80.06 g/mol Mass fraction of O ≈ 0.599

The mass fraction of oxygen (O) in SO3 is approximately 0.599.

Therefore, the mass fraction of sulfur (S) in SO3 is approximately 0.400, and the mass fraction of oxygen (O) in SO3 is approximately 0.599.

Please note that the values provided are approximate and may vary slightly depending on the exact molar masses used.