Chemistry Past Questions and Answers

Use the graph above to answer this question.How long does it take all the solid to melt?`

The diagram above represents the formation of

A compound contains 31.91% potassium, 28.93% chlorine and the rest oxygen. What is the chemical formula of the compound?
[K = 39, Cl = 35.5, O = 16]

A compound contains 31.91% potassium, 28.93% chlorine and the rest oxygen. What is the chemical formula of the compound?
[K = 39, Cl = 35.5, O = 16]

The formula CH₂ for ethanoic acid is regarded as its