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Sawdust has a high surface are to volume ratio while a log has a low ratio. Surface atoms react much more quickly than atoms in the interior (in this case the reaction is burning).
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoSawdust, no matter how tightly packed, has a lot more "air" in it than solid wood. Air supports combustion, hence the sawdust burns away faster.
Wiki User
∙ 7y agoMuch greater surface area. Wood powder, with even more surface area, is explosive when it is thoroughly mixed with air.
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Why a log of wood does not burn by a matchstick while paper does burn?
Because the density of the wood differs to that of paper, so the duration of which you'd need to hold the match underneath the log for an extended duration..
Why can't the pH of an aqueous solution be less than 0?
The pH of a solution can be less than zero. Remember that pH is defined as the negative logarithm of the hydronium ion concentration, pH = -log[H3O+]. For pH to be negative, the log of the hydronium ion concentration needs to be positive. The log of a number is only positive if that number is greater than one. For example, the value of log(2) is about 0.30. This means that the pH of a strong acid that has a concentration of greater than 1 molar will be negative.
Do they make a log to burn in fireplace to get rid of soot?
Yes, there are soot and creosote "cleaner" logs. In my opinion, they do not work as well as cleaning a chimney properly with a chimney brush.
A large log of wood will burn more slowly than the same log chopped into smaller pieces What is the best explanation for this observation?
When wood burns, the carbon and carbon molecules in the wood react with oxygen in the air, to form mainly carbon monoxide and carbon dioxide. But, since only the surface of the wood has contact to the air, this happens fairly slowly. When the wood is cut into shavings, or neat ribbons, the surface area increases, allowing for more oxygen to come into contact with the wood, and thus greatly increasing the rate of the reaction.
When a 1 kilogram log was burned 0.05 kilogram of ash was produced. The mass of the ash is less than the mass of the log because?
Some matter was converted to gases that were released.
Why does a match burn quicker than a log?
the match is smaller then the log.
Why does kindling burn faster than the log from which they came?
Twigs burn faster than logs because the heat of the fire can wrap around the twigs quicker. Fires won't be able to penetrate through logs as quick because they are deeper.
Why does a log of wood take longer time to start burning than wood shavings?
Smaller surface area, Wood shavings are generally drier than a log of wood, because of the general density of the wood itself. Wood shavings are in turn, easier to burn because of the small amount of moisture in them, therefore, they burn faster, and easier.
Why does a solid wooden log burn more slowly than an equal mass of sawdust?
Because the solid log has less surface area.
What burns faster a log or a log cut into sticks?
Same thing.
When you burn a log in the fireplace why is there a difference in mass?
The chemical composition of a log (and most organic substances) is carbon. Carbon when burned becomes oxides of carbon which are usually gases i.e. carbon dioxide and carbon monoxide. Therefore in essence, most of your log is being vaporized. If you were to burn the log in an enclosure such that none of the gases were lost, you would observe no mass difference.
How can you increase your days on Howrse com faster?
You cannot achieve more than one day per log in day.
When you burn a log has a physical change occurred?
Yes, carbon from the log combines with the air to form co2.
When you burn a log what is happening from the energy standpoint?
The chemical energy stored in the log is converted into heat energy.
Can you burn willow in a log burner fireplace?
Yes, of coarse you can!
How do you calculate a log with 9 diameter and 10' length?
You do not calculate a log!You can calculate the surface area or the volume or, if you know the species, the mass or even time for which it would burn in a hearth. But the log, itself, is not something you can calculate.You do not calculate a log!You can calculate the surface area or the volume or, if you know the species, the mass or even time for which it would burn in a hearth. But the log, itself, is not something you can calculate.You do not calculate a log!You can calculate the surface area or the volume or, if you know the species, the mass or even time for which it would burn in a hearth. But the log, itself, is not something you can calculate.You do not calculate a log!You can calculate the surface area or the volume or, if you know the species, the mass or even time for which it would burn in a hearth. But the log, itself, is not something you can calculate.
Why a log of wood does not burn by a matchstick while paper does burn?
Because the density of the wood differs to that of paper, so the duration of which you'd need to hold the match underneath the log for an extended duration..
