Write a chemical equation for the reaction of aqueous solutions of sodium carbonate and calcium sulfate to give calcium carbonate precipitate and aqueous sodium sulfate. express your answer as a chemical equation. identify all of the phases in your answer.

Na₂CO₃(aq) + CaSO₄(aq) ⟶ CaCO₃(s) + Na₂SO₄(aq)

Explanation:

We can use the criss-cross method to work out the formulas of the compounds.  

The steps are

When we use this method, the formula for the compound formed from Na⁺ and CO₃²⁻ becomes Na₂CO₃ .

The table below lists the formulas for the possible combinations.

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.