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 Form 4 Energy Changes in Chemical and Physical Processes Questions and Answers

Study the table below and answer the questions that follow.
figenergy24420201108.JPG
figenergy24420201109.JPG
(a) Predict the heat of combustion of butane and write it on the space provided in the table above.
(b) What does the sign #DeltaHc# value indicate about combustion of alkanes?

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