Question

Наибольшую молярную массу имеет оксид: а)BaO б)CaO в)F2O7 г)MgO

Answer 1

А)ВаО М=137+16=153 г/моль                           

Answer 2

Molar Mass of Oxides

The molar mass of oxides varies depending on the elements involved. Let's calculate the molar masses of the given oxides:

a) BaO (Barium Oxide) The molar mass of BaO can be calculated by adding the molar mass of barium (Ba) and oxygen (O). The molar mass of Ba is approximately 137.33 g/mol, and the molar mass of O is approximately 16.00 g/mol. So, the molar mass of BaO is approximately 153.33 g/mol.

b) CaO (Calcium Oxide) The molar mass of CaO can be calculated by adding the molar mass of calcium (Ca) and oxygen (O). The molar mass of Ca is approximately 40.08 g/mol, and the molar mass of O is approximately 16.00 g/mol. So, the molar mass of CaO is approximately 56.08 g/mol.

c) F2O7 (Dioxygen Heptafluoride) The molar mass of F2O7 can be calculated by adding the molar mass of fluorine (F) and oxygen (O). The molar mass of F is approximately 18.99 g/mol, and the molar mass of O is approximately 16.00 g/mol. So, the molar mass of F2O7 is approximately 160.97 g/mol.

d) MgO (Magnesium Oxide) The molar mass of MgO can be calculated by adding the molar mass of magnesium (Mg) and oxygen (O). The molar mass of Mg is approximately 24.31 g/mol, and the molar mass of O is approximately 16.00 g/mol. So, the molar mass of MgO is approximately 40.31 g/mol.

Based on the calculations, the oxide with the highest molar mass is F2O7 (Dioxygen Heptafluoride), with a molar mass of approximately 160.97 g/mol.