How many formula units are there in 325 grams PbO2?

There are approximately 8.183 × 10²³ units of PbO₂ in 325 grams of PbO₂

Explanation:

The given mass of PbO₂ = 325 grams

The molar mass of PbO₂ = 239.2 g/mol

The number of moles of PbO₂ in 325 grams of PbO₂ is given by the formula for the number of moles of a chemical compound in a given sample of the compound as follows;

For the given PbO₂ compound, in the question, we have;

The number of units of PbO₂ in one mole is given by the Avogadro's number as follows;

The number of units of PbO₂ per mole = 6.023 × 10²³ units

The number of units of PbO₂, in 1.36 mole of PbO₂ is therefore;

 = 1.36 × 6.023 × 10²³ units ≈ 8.183 × 10²³ units of PbO₂

The number of units of PbO₂, in 1.36 mole of PbO₂ ≈ 8.183 × 10²³ units.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.