Question

5) Shyam is a farmer. He has 5 cows and hay stacked near the bam. There was a fire
accident in his barn. Imagine you are one of the forensic experts who came to
inspect the debris of the fire accident. You find

i) Traces of CO and ash in the debris

11) Evidence that there was damp hay present

a) Under which type of combustion would you classify this accident? Relate your
choice to the given hint {Hint: Bacterial fermentation in wet hay releases heat

b) What do the traces of CO and ash indicate?

c) Calculate the total energy released from methane if the calorific value for
methane is 55000 kJ/kg and one cow can contribute to approximately 5.1kg of
methane per day

d) Give one harmful effect of excess methane in our surroundings.
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Answer 1

Answer:

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Answer 2

Answer:

Explanation:

There is however one exception; the case of the exploding haystacks. ... is cut it should be turned towards the sun and must never be stacked until it is quite dry. If ... for spontaneous combustion in stored hay; "We have already had one fire in hay ... NZ Fire Service, and in isolated farm settings farmers may deal with haystack ...

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