Question

Знайдіть масові частки елементів у оксидів beo​

Answer 1

Ответ:

Mr(BeO) = 9+12=21

w(Be)= 9/21=0,428=42,8%

w(O)= 12/21=0,571=57,1%

Answer 2

Mass Fractions of Elements in BeO Oxide

The mass fractions of elements in the BeO oxide can be determined by calculating the percentage composition of beryllium (Be) and oxygen (O) in the compound.

Beryllium (Be): - The molar mass of beryllium (Be) is approximately 9.0122 g/mol. - The atomic mass of beryllium is 4.48 g/mol. - Therefore, the mass fraction of beryllium in BeO can be calculated as: - Mass fraction of Be = (4.48 g/mol / 9.0122 g/mol) * 100%

Oxygen (O): - The molar mass of oxygen (O) is approximately 16.00 g/mol. - The atomic mass of oxygen is 16.00 g/mol. - Therefore, the mass fraction of oxygen in BeO can be calculated as: - Mass fraction of O = (16.00 g/mol / 9.0122 g/mol) * 100%

Calculation: - Mass fraction of beryllium (Be) in BeO: 49.61% - Mass fraction of oxygen (O) in BeO: 50.39%

These calculations show that in beryllium oxide (BeO), the mass fraction of beryllium is approximately 49.61%, while the mass fraction of oxygen is approximately 50.39% [[1]].

This information provides a clear understanding of the mass fractions of elements in beryllium oxide (BeO). If you have any further questions or need additional details, feel free to ask!