What is the ionic and net ionic equation?

Ca(HO)2(aq)+ Na2CO3(aq)-> CaCO3 -> (s)+ 2NaOH (aq)

I don't understand why there are two arrows?
This is what i have so far...
Ca+2OH+Na2(aq)+CO3(aq)...

There shouldn't be two arrows. The second arrow should be a +.

Ca(OH)2 + Na2CO3 ==> CaCO3 + 2NaOH

The ionic equation and net ionic equation are ways to represent chemical reactions that occur in aqueous solutions. Let's break down the given reaction and explain each step.

The given equation is: Ca(HO)2(aq) + Na2CO3(aq) -> CaCO3(s) + 2NaOH(aq)

The first step is to write the balanced molecular equation, which represents the overall reaction. It includes all the reactants and products in their complete molecular or ionic form:
Ca(HO)2(aq) + Na2CO3(aq) -> CaCO3(s) + 2NaOH(aq)

Here, "aq" stands for aqueous, which means the compound is dissolved in water.

The second step is to write the ionic equation. In the ionic equation, all soluble ionic compounds are dissociated into their respective ions. Insoluble compounds, such as CaCO3, are written as undissociated substances.

Ca(HO)2(aq) actually dissociates into Ca^2+(aq) + 2OH^-(aq)
Na2CO3(aq) dissociates into 2Na+(aq) + CO3^2-(aq)

Therefore, the ionic equation becomes:
Ca^2+(aq) + 2OH^-(aq) + 2Na+(aq) + CO3^2-(aq) -> CaCO3(s) + 2Na+(aq) + 2OH^-(aq)

The third step is to write the net ionic equation, which involves eliminating the spectator ions. Spectator ions are present on both sides of the equation and do not participate in the actual chemical reaction. In this case, the spectator ions are 2Na+ and 2OH^-.

By removing the spectator ions, the net ionic equation becomes:
Ca^2+(aq) + CO3^2-(aq) -> CaCO3(s)

Note that the two arrows in the given equation indicate the different steps. The first arrow represents the molecular equation, while the second arrow is used to separate the reactants and products when writing the ionic or net ionic equations.

In summary, the given ionic and net ionic equations for the reaction Ca(HO)2(aq) + Na2CO3(aq) -> CaCO3(s) + 2NaOH(aq) are:

Ionic equation: Ca^2+(aq) + 2OH^-(aq) + 2Na+(aq) + CO3^2-(aq) -> CaCO3(s) + 2Na+(aq) + 2OH^-(aq)

Net ionic equation: Ca^2+(aq) + CO3^2-(aq) -> CaCO3(s)