Chemistry Past Questions and Answers

Which of these alloys contains copper?

If the molecular mass of tetraoxosulphate (VI) acid is 98, calculate its vapour density.

Sieving is a technique used to separate mixtures containing solid particles of

3H\(_{2(g)}\)+ N2 ⇔ 2NH\(_{3(g)}\) ; H= -ve
In the reaction above, lowering of temperature will

The situation obtained when a perfect gas expands into a vacuum is