Chemistry Past Questions and Answers

The solubility in moles per \(\mathrm{dm}^{3}\) of \(20 \mathrm{~g}\) of \(\mathrm{CuSO}_{4}\) dissolved in \(100 \mathrm{~g}\) of water at \(180^{\circ} \mathrm{C}\) is ____________

Sodium hydroxide should be stored in properly closed containers because it ____________

\(2 \mathrm{H}_{2} \mathrm{~S}_{(\mathrm{g})}+\mathrm{SO}_{2(\mathrm{~g})} <br/>ightarrow 3 \mathrm{~S}_{(\mathrm{g})}+\) \(2 \mathrm{H}_{2} \mathrm{O}_{(1)}\).<br/><br/>The above reaction is ____________

How many unpaired electrons are in the p-orbitals of a fluorine atom?

A metal \(M\) displaces zinc from \(\mathrm{ZnCl}_{2}\) solution. This shows that ____________