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boyakko [2]
3 years ago
10

In a campfire, carbon from wood reacts with oxygen in a combustion reaction. If you’ve ever started a campfire, you know you mus

t begin by lighting small pieces of wood (called kindling) instead of logs. Likewise, as this video shows, iron filings burn in the presence of air to make iron oxide. Why do iron filings burn while a heavy iron pipe does not? Why do twigs ignite better than logs? Give your answer in terms of atoms.
Chemistry
2 answers:
hichkok12 [17]3 years ago
7 0
Increased surface area means more<span> places where </span>wood can<span> turn into flame - where heat, fuel, and oxygen </span>are<span> all in the same place at the same time. </span>The mass of a small particle is such that the entire particle can be heated<span> to ignition temperature. An </span>iron<span> rod will </span>not burn<span> as it has relatively very less surface area per unit mass </span>but iron filings<span> with more surface area per unit mass can </span>burn<span> in air and get converted to </span>iron oxide.<span>Kindling </span>or<span> smaller pieces </span>or wood <span>have a lot of surface area and therefore have </span>more<span> contact with oxygen, making them easier to burn.</span>
Alenkasestr [34]3 years ago
5 0
One thing I can tell is the fact that more surface area means more wood to burn into flames. When it starts to burn Heat, fuel, and oxygen occur in the same place at the same time to put it into flames.




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1143.4grams of solute are needed to make 2.50L of a 1.75M solution of Ba(NO3)2. Details about molarity can be found below.

<h3>How to calculate mass?</h3>

The mass of a substance can be calculated by multiplying the number of moles by its molar mass.

However, the number of moles can be calculated by using the following formula:

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