C(s) + 2S(g) → CS2(g) ΔH = +89 kJ mol-1 The chemical equation above implies that

A burning candle produces water and

Which of the following represent hybridization in ethyne?

The gas that can best be collected by downward displacement of air is

The pair of organic compounds that are isomers is

Which of the following metals burn with brick red flame?

C12H22O11(s) + H2SO4(aq) 12C(s) + 11H2O(l) + H2SO4(aq) In the reaction above, tetraoxosulphate (VI) acid function as

When sodium reacts with water, the resulting solution is

A characteristic reaction of the compounds with the general formula CnH2n is