Question

1)what is the mass of 4 moles of aluminium ions

2) workout the formula of carbon dioxide and hydrogen chloride

3) the valency of an element X is 1 and that of oxygen is 2 what will be the formula of the compound formed by the combination X with

Answer 1

Ans.1) 108 grams

Ans.2) Co² + HCl

Ans.3) The elememt X is Na and reacting with oxygen it will be Sodium Superoxide Na0²

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