Question

Обчисліть кількість речовини N2O3 масою 20,4г пожалуйста​

Answer 1

Ответ:

N=n×Na=2моль×6,02×10^23=12,04×10^23 частиц.

Na=6,02×10^23 частиц.

Answer 2

Calculating the Amount of Substance N2O3 with a Mass of 20.4g

To calculate the amount of substance N2O3 with a mass of 20.4g, we can use the formula:

Amount of substance (in moles) = Mass / Molar mass

Where: - Mass is the given mass of the substance - Molar mass is the mass of one mole of the substance

Molar Mass of N2O3

The molar mass of N2O3 can be calculated by adding the molar masses of the individual elements in the compound.

- Nitrogen (N) has a molar mass of approximately 14.01 g/mol - Oxygen (O) has a molar mass of approximately 16.00 g/mol

Using these values, we can calculate the molar mass of N2O3:

Molar mass of N2O3 = (2 * molar mass of N) + (3 * molar mass of O)

Molar mass of N2O3 = (2 * 14.01 g/mol) + (3 * 16.00 g/mol)

Molar mass of N2O3 = 28.02 g/mol + 48.00 g/mol

Molar mass of N2O3 = 76.02 g/mol

Calculating the Amount of Substance

Now, we can use the formula to calculate the amount of substance (in moles) of N2O3 with a mass of 20.4g:

Amount of substance (in moles) = 20.4g / 76.02 g/mol

Amount of substance (in moles) ≈ 0.268 moles

Therefore, the amount of substance of N2O3 with a mass of 20.4g is approximately 0.268 moles.