Question

5 а) Азот может образовывать пять оксидов разного состава. Составьте формулу оксида азота методом «нулевой суммы». (a) N+5xOy (b) N+4xOy 6(a) Рассчитайте массовую долю азота в получившемся оксиде азота в задании 5(a). ​

Answer 1

Ответ:

Объяснение:

b)NO2

P.S a) N205b

Answer 2

Formula for Nitrogen Oxide using the "Zero Sum" Method

The "zero sum" method is a technique used to determine the formula of a compound when given the number of atoms of each element present. In this case, we are given that nitrogen (N) can form five different oxides with varying compositions. We need to determine the formula for one of these oxides.

The formula for nitrogen oxide using the "zero sum" method is N2O5. This means that each molecule of nitrogen oxide contains two nitrogen atoms (N) and five oxygen atoms (O).

Calculation of the Mass Fraction of Nitrogen in Nitrogen Oxide

To calculate the mass fraction of nitrogen in the nitrogen oxide (N2O5) mentioned in question 5(a), we need to know the molar masses of nitrogen and oxygen.

The molar mass of nitrogen (N) is approximately 14.01 g/mol, and the molar mass of oxygen (O) is approximately 16.00 g/mol.

In the formula N2O5, we have two nitrogen atoms with a total molar mass of 2 * 14.01 g/mol = 28.02 g/mol. We also have five oxygen atoms with a total molar mass of 5 * 16.00 g/mol = 80.00 g/mol.

To calculate the mass fraction of nitrogen, we divide the molar mass of nitrogen by the total molar mass of the compound and multiply by 100:

Mass fraction of nitrogen = (molar mass of nitrogen / total molar mass of compound) * 100

Mass fraction of nitrogen = (28.02 g/mol / (28.02 g/mol + 80.00 g/mol)) * 100

Calculating this expression gives us the mass fraction of nitrogen in the nitrogen oxide.

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