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MaRussiya [10]
3 years ago
12

Which burns faster, a large log or the same log cut into small sticks of wood?

Chemistry
1 answer:
Harlamova29_29 [7]3 years ago
8 0

Answer: Small sticks of wood would burn faster.

Explanation:

Rate of a reaction is the speed which a reaction takes place.

Rate of a reaction depends on the surface area of the particles. More is the surface area, more will the rate of reaction as more of the particles surface would be exposed for the reaction to occur.

Surface area is increased by decreasing the size of the particles.

Thus a large log will burn slower as compared to the same log cut into small sticks of wood as lesser area will be exposed to air and thus rate of burning will be slow.

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Write the electron configuration (ground and excited states) for element with atomic number 16 ?
Talja [164]
2, 8,6 because it has to be in a configuration of 2,8,8
3 0
3 years ago
A sample of gas occupies 9.0 mL at a pressure of 500.0 mm Hg. A new volume of the same sample is at a pressure of 750.0 mm Hg. I
Ymorist [56]
The new pressure is larger than the original, the new volume is smaller than 9.0 ml and the new volume is 6.0 

good luck :D
3 0
3 years ago
Read 2 more answers
Certain compound contains 7.3% carbon, 4.5% hydrogen, 36.4% oxygen, and 31.8% nitrogen. It’s reality molecular mass is 176.0. Fi
erastovalidia [21]

Answer:

The answer to your question is:

Explanation:

Data

carbon        7.3%          =     7.3g

hydrogen    4.5%         =      4.5g

oxygen       36.4%         =     36.4 g

nitrogen     31.8%         =     31.8 g

Now

For carbon

                    12 g --------------------1 mol

                    7.3 g     -------------     x

                       x = 7.3/12 = 0.608 mol

For hydrogen

                 1 g   --------------------  1 mol

                 4.5 g  ------------------    x

                   x = 4.5 mol

For oxygen

             16 g ------------------- 1 mol

             36.4 g ----------------    x

             x = 2.28 mol

For nitrogen

              14 g   ----------------   1 mol

              31.8 g ---------------    x

             x = 2.27 mol

Now divide by the lowest result, the is 0.608 from carbon

carbon              0.608/0.608 = 1

hydrogen           4.5/ 0.608 = 7.4

oxygen              2.28/0.608 = 3.75

nitrogen             2.27/0.608 = 3.73

Empirical formula = CH₇O₄N₄

     

6 0
3 years ago
What is the approximate pressure of a storage cylinder of recovered R-404A that does not contain any non-condensable impurities
gregori [183]

Answer:

288 psig

Explanation:

4 0
3 years ago
Read 2 more answers
Consider the reaction.
Kaylis [27]

Answer:

2.1 x 10^-2

Explanation:

Divide 8.4 x 10^-3 x 8.4 x 10^-3 by 5.82 x 10^-2 and you end up with 2.1 x 10^-2

7 0
3 years ago
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