Answer:
The answer to your question is:
Explanation:
Reaction
Na₂SO₄ (aq) + CaCl₂(aq) ⇒ CaSO₄(s) + NaCl(aq)
2 ------------- Na --------------- 1
1 ------------ S -------------- 1
1 ---------- Ca -------------- 1
2 ------------ Cl -------------- 1
1 ------------ O -------------- 1
Then, there are less Na and Cl in the products, so,
Na₂SO₄ (aq) + CaCl₂(aq) ⇒ CaSO₄(s) + 2 NaCl(aq)
2 ------------- Na --------------- 2
1 ------------ S -------------- 1
1 ---------- Ca -------------- 1
2 ------------ Cl -------------- 2
1 ------------ O -------------- 1
Now, the reaction is balanced.
