Make note of it and learn from her mistakes :)
Answer:
4.9 × 10²³ molecules
Explanation:
Given data:
Number of molecules = ?
Number of moles of oxygen = 0.815 mol
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ molecules
0.815 mol × 6.022 × 10²³ molecules / 1 mol
4.9 × 10²³ molecules
In Homogeneous, "Homo" means same, so homogeneous means the same nature or kind.
Heterogeneous is the opposite. It means diverse.
A good way to remember is just think of homo as same. And the rest should come to you.
Hope this helps! :)
