Question

СРОЧНО ПОМОГИТЕ!!! ХИМИЯ!!! Обчисліть кількість речовини, кількість молекул кисню та атомів оксигену, що міститься у 16 г кисню. Який об’єм даної кількості кисню?

Answer 1

Объяснение:

количество вещества 0.5моль

объем 11.2л

количество атомов 1.5•10²³

количество молекул 3.01•10²³

Answer 2

To calculate the amount of substance (in moles), the number of molecules of oxygen, and the number of oxygen atoms in 16 g of oxygen, we need to use the molar mass of oxygen.

Molar Mass of Oxygen:

The molar mass of oxygen (O₂) is approximately 32 g/mol [[1]].

Calculating the Amount of Substance (in Moles):

To calculate the amount of substance (in moles), we can use the formula:

Amount of Substance (in moles) = Mass / Molar Mass

Substituting the given values:

Amount of Substance (in moles) = 16 g / 32 g/mol = 0.5 mol

Therefore, there are 0.5 moles of oxygen in 16 g of oxygen.

Calculating the Number of Molecules of Oxygen:

To calculate the number of molecules, we can use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of Molecules = Amount of Substance (in moles) x Avogadro's Number

Substituting the given values:

Number of Molecules = 0.5 mol x 6.022 x 10^23 molecules/mol = 3.011 x 10^23 molecules

Therefore, there are approximately 3.011 x 10^23 molecules of oxygen in 16 g of oxygen.

Calculating the Number of Oxygen Atoms:

Since each oxygen molecule (O₂) contains 2 oxygen atoms, we can calculate the number of oxygen atoms by multiplying the number of molecules by 2.

Number of Oxygen Atoms = Number of Molecules x 2

Substituting the given values:

Number of Oxygen Atoms = 3.011 x 10^23 molecules x 2 = 6.022 x 10^23 atoms

Therefore, there are approximately 6.022 x 10^23 oxygen atoms in 16 g of oxygen.

Calculating the Volume of the Given Amount of Oxygen:

To calculate the volume of the given amount of oxygen, we need to know the density of oxygen at the given conditions. The density of oxygen can vary depending on temperature and pressure.

Please provide the temperature and pressure at which you want to calculate the volume of the given amount of oxygen, and I will be happy to assist you further.