Chemistry Past Questions and Answers

The action of zinc on an acid produces ____________

A solution is prepared by dissolving I .96g of H₂SO₄ in 250 cm³ of its solution. What is the concentration in moles per dm³?

If the volume of a gas at 35°C is 60cm³, what would be its volume in cm³ at 273k?

Sulphur has an oxidation number of +4 in ____________

Atomic size decreases ____________