Question

Обчислити масову частку оксигену в сполуці K2SO4cрочно!​

Answer 1

Ответ:

64

Объяснение:

K2SO4=2*39+32+4*16=78+32+64=174

64гр оксигена

Answer 2

Calculating the Molar Mass of K2SO4

To calculate the mass percent composition of oxygen in K2SO4, we first need to find the molar mass of K2SO4.

The molar mass of K2SO4 can be calculated by adding up the atomic masses of all the atoms in the compound.

The atomic masses are as follows: - K (Potassium) = 39.10 g/mol - S (Sulfur) = 32.07 g/mol - O (Oxygen) = 16.00 g/mol

The molar mass of K2SO4 can be calculated as follows: Molar mass of K2SO4 = 2(K) + 1(S) + 4(O)

Molar mass of K2SO4 = 2(39.10) + 32.07 + 4(16.00)

Molar mass of K2SO4 = 78.20 + 32.07 + 64.00

Molar mass of K2SO4 = 174.27 g/mol

Calculating the Mass Percent of Oxygen in K2SO4

Now that we have the molar mass of K2SO4, we can calculate the mass percent of oxygen in the compound.

The mass percent of oxygen in K2SO4 can be calculated using the following formula: Mass percent of oxygen = (Mass of oxygen / Molar mass of K2SO4) * 100

The mass of oxygen in K2SO4 is 4 * 16.00 g/mol (since there are 4 oxygen atoms in K2SO4).

Mass percent of oxygen = (4 * 16.00 / 174.27) * 100

Mass percent of oxygen = (64.00 / 174.27) * 100

Mass percent of oxygen in K2SO4 is approximately 36.72%.

This calculation shows that oxygen makes up about 36.72% of the mass of K2SO4.