Is burning of coal a reversible change??? If yes how?

2 answers:

7 0

No, for coal burning<span> to be a </span>reversible change<span>, you would need the ability to take CO2 and turn it back into solid carbon.</span>

koban [17]3 years ago

5 0

I don't think so. No way that I know anyway. It it could be done then the need for more coal to be mined would have stopped hundreds of years ago. Once coal is burned, it forms water and carbon dioxide (essentially) with some sulfur oxides.

How do you put that back together again. It's a little like humpty dumpty.

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Alekssandra [29.7K]

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Grace [21]

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vredina [299]

Answer:

2.645

Explanation:

Rate of diffusion formula:

Sqrt(mass2/mass1)

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Its true :)
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3 years ago

A bicyclist travels the first 800 m of a trip with a speed of 10 m/s, the next 500 m with an

bezimeni [28]

Answer:9.18 m/s

Explanation:

The average speed for the entire trip is found ......total distance/total time. Remember r*t=d, so divide both sides by t and get r = d/t.

So the cyclist went 800+500+1200 m = 2500 m for total distance.

10t =800 leads to t=80 sec

5t=500 leads to t=100 sec

13t = 1200 leads to t = 92.3 sec

total time is 272.3 sec

Average speed for the entire trip is 2500 / 272.3 = 9.18 m/s

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3 years ago