Question

please solve this question​

Answer 1

Answer:

1.

Ar and S

2.

FeSO₄ and Ca(OH)₂

3.

KOH + H₂SO₄⇒ K₂SO₄ + H₂O

2KOH + H₂SO₄⇒ K₂SO₄ +2 H₂O ( Balanced equation )

when acid react with base it always form salt and water.

4.

Formula :  A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.

5.

a.

Double displacement reaction : Exchange of ions takes place.

b.

Decomposition reaction : a compound in splitting into two atoms