Question

Like in Sulphate polyatomic ion
given below one oxygen atom needs 2 electron
So,it's valency of af sulphate is -2-
Can you give me such reason for Valency of
sulphite (SO3)?
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Answer 1

Answer:

thid is the answer of your third question thanks for biliving

Explanation:

The rate of evaporation is affected by the exposed surface area of water.

Higher the exposed surface area,higher the rate of evaporation.The experiment is not a fair one because the amount of water in the contain are different.