Question

Обчисліть кількість молекул N2О у 32,0 г.

Answer 1

Відповідь:

4.4

Пояснення:

N = n × Na

n = m/M

M (N2O) = Mr (N2O) = 14×2+16=44

n = 32/44 = 0.73

N = 0.73 × 6.02×10∧23 = 4.4 (приблизно дорівнює)

Answer 2

Calculating the Number of N2O Molecules in 32.0g

To calculate the number of molecules of N2O in 32.0g, we can use the concept of moles and Avogadro's number. First, we need to find the molar mass of N2O, and then we can use it to calculate the number of moles and subsequently the number of molecules.

The molar mass of N2O can be calculated as follows: - Molar mass of N2 = 2 * atomic mass of N - Molar mass of O = 1 * atomic mass of O - Total molar mass of N2O = Molar mass of N2 + Molar mass of O

The atomic masses of N and O can be found in the periodic table.

Molar Mass of N2O: - Molar mass of N = 14.01 g/mol - Molar mass of O = 16.00 g/mol - Total molar mass of N2O = 2 * 14.01 g/mol + 16.00 g/mol

Now, we can use the molar mass to calculate the number of moles of N2O in 32.0g.

Number of Moles of N2O: - Number of moles = Mass (g) / Molar mass (g/mol)

Finally, we can use Avogadro's number to convert the number of moles to the number of molecules.

Number of Molecules of N2O: - Number of molecules = Number of moles * Avogadro's number

Let's calculate the number of molecules of N2O in 32.0g using the above steps.