Question

В состав вещества входят натрий, фосфор и кислород , массовые части которых соответственно равны 34,6% 23,% 42,1% .Определите формулу вещества . ПОМОГИТЕ ПОЖАЛУЙСТА ОЧЕНЬ НУЖНО

Answer 1

Соотношение Натрий , Фосфор и Оксиген: 34,6/23:23,3/31:42,1/16=1,5:0,75:2,63=2:1:3,5=4:2:7, получим Na4P2O7

Answer 2

Formula of the Substance with Sodium, Phosphorus, and Oxygen

The substance with sodium, phosphorus, and oxygen can be determined by considering the mass percentages of each element. According to the given information, the mass percentages are as follows:

- Sodium (Na): 34.6% - Phosphorus (P): 23% - Oxygen (O): 42.1%

To determine the formula of the substance, we need to find the ratio of the atoms in the compound. We can assume that the compound contains one atom of sodium, one atom of phosphorus, and multiple atoms of oxygen.

To calculate the ratio, we need to convert the mass percentages to moles. We can assume a 100g sample of the substance to simplify the calculations.

The molar mass of sodium (Na) is approximately 22.99 g/mol, phosphorus (P) is approximately 30.97 g/mol, and oxygen (O) is approximately 16.00 g/mol.

Using these molar masses, we can calculate the number of moles for each element:

- Sodium (Na): (34.6 g / 22.99 g/mol) ≈ 1.50 mol - Phosphorus (P): (23 g / 30.97 g/mol) ≈ 0.74 mol - Oxygen (O): (42.1 g / 16.00 g/mol) ≈ 2.63 mol

Now, we need to find the simplest whole number ratio between these moles. Dividing each mole value by the smallest mole value (0.74 mol), we get:

- Sodium (Na): 1.50 mol / 0.74 mol ≈ 2.03 - Phosphorus (P): 0.74 mol / 0.74 mol = 1 - Oxygen (O): 2.63 mol / 0.74 mol ≈ 3.55

Rounding these values to the nearest whole number, we get:

- Sodium (Na): 2 - Phosphorus (P): 1 - Oxygen (O): 4

Therefore, the formula of the substance with sodium, phosphorus, and oxygen is Na2PO4.

Please note that the given search results did not provide direct information about the formula of the substance. The calculation above is based on the assumption that the substance contains one atom of sodium, one atom of phosphorus, and multiple atoms of oxygen, which is a common formula for compounds containing these elements.