How many moles of ions are there in .2 mol of lithium oxide?
I need help again...
Strictly speaking, Li2O is a solid and in that form it is not ionized. To get ions from it, you must dissolve it in water, and that causes it to decompose.
Despite all that, they probably expect you to say that Li2O consists of 2 Li+ ions and one O-- ion. If you accept that premise, then 0.2 moles of Li2O containts 0.6 moles of ions.
To determine the number of moles of ions in 0.2 mol of lithium oxide (Li2O), we need to first understand its composition.
Lithium oxide, Li2O, is a compound that consists of two lithium ions (Li+) and one oxide ion (O2-).
Given the ratio of ions in the compound, we can calculate the number of moles of ions using the given information of 0.2 mol of Li2O.
For each mole of Li2O, there are 2 moles of Li+ ions and 1 mole of O2- ions. Therefore, we can calculate the number of moles of ions as follows:
Number of moles of Li+ ions = 2 * number of moles of Li2O
Number of moles of O2- ions = 1 * number of moles of Li2O
In this case, substituting the value of 0.2 mol for Li2O, we can calculate the number of moles of ions as follows:
Number of moles of Li+ ions = 2 * 0.2 mol = 0.4 mol
Number of moles of O2- ions = 1 * 0.2 mol = 0.2 mol
Therefore, in 0.2 mol of lithium oxide, there are 0.4 moles of Li+ ions and 0.2 moles of O2- ions.