Question

A) What is polyatomic ions. Give examples.
B) Calculate the molecular mass of magnesium sulphate.​

Answer 1

Explanation:

ANSWER {A} :- Polyatomic ions are ions which consist of more than one atom. For example, nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms.

ANSWER {B} :-

Molar Mass of Magnesium (mg) = 24 g

Molar Mass of Sulphur (S) = 32 g

Molar Mass of Oxygen (O) = 16 g

[ we know that , we write magnesium sulphate as mgso4 and for that we have to break sulphate as ~ sulphur and ~ oxygen ]

Molecular Mass of magnesium sulphate (MgSO4 ) = 24+ 32+ 16×4

= 120 g

HOPE THIS WILL HELP YOU ALOT

GIVE THANKS

AND APPRECIATE ME