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faltersainse [42]
2 years ago
14

What important points do you need to remember about combustion?

Chemistry
1 answer:
goldenfox [79]2 years ago
7 0

Explanation:

A substance burning in the presence of oxygen and leads to the formation of heat and light is called combustion.

Some important points about combustion are as follows:

  • Fuel should be present for burning.
  • Air should be present for the supply of oxygen.
  • There should be heat (or ignition temperature) to initiate the chemical reaction.
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What is the percentage error of length measurement of 0.229cm if the correct value is 0.225cm
Mars2501 [29]

Percent error is the difference between the measured and known value, divided by the known value, multiplied by 100%.

So first, we take our measured value, .299 cm, minus our known value, .225 cm.

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\frac{.004}{.225}=.0177777778

Finally, multiply your answer by 100

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Round to three significant figures, and you're done.

=1.78 % error



5 0
3 years ago
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