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3 years ago

Explain how compaction is important in the formation of coal.

2 answers:

7 0

Coal is being formed from decayed fossils and remains. These materials are smashed, "compacted" together until their chemicals merge together from the pressure of the compacting this is also how diamonds form from coal just more heat and more pressure. This process is called compaction. Without such, no coal will be present.

zheka24 [161]3 years ago

3 0

Answer:

Coal is a dark-colored sedimentary rock and is often considered as a fossil fuel. These are formed from the plants and trees that were buried millions of years ago, under the earth's surface. These plants and trees that have been deposited must have formed in the tropical region because both the tropics receive a maximum amount of sunlight and rainfall that favors the growth and expansion of trees.

These plants after getting buried undergone a significantly high level of compaction due to the weight of the overlying sediments and rocks. Moreover, they were subjected to extremely high pressure and temperature condition, as a result of which the oxygen is eliminated and the carbon remained and over a due course of time, it gave rise to the formation of coal.

Thus, Compaction is highly important for the formation of coal.

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Answer:

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Explanation:

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4 years ago

To cook in a dry heat is.<br> 1-Baking<br> 2-Broiling<br> 3-Boiling<br> 4-Sauteing

Degger [83]

Answer:

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Explanation:

4 0

3 years ago

Can someone please help me

Margarita [4]

I think it is the first choice

Hope that helped!

5 0

3 years ago

Read 2 more answers

A level chem naming isomers

anyanavicka [17]

Answer:

Butan-1-ol or Butanol

2-methylpropan-2-ol

2-methylpropan-1-ol

Butan-2-ol

Explanation:

Data Give:

Three Isomers are given

names of These =?

Details:

Isomers:

Isomers are those chemical compounds that have same molecular formula but different structures.

In the given question the compound have same molecular formula that is C₄H₉OH but the structures are different.

So due to different structures they are named differently.

The 1st and last one are straight Chains and the other 2 are branched. all the structure have four carbon atoms, one OH group and 9 hydrogen atoms.

Names are given in attachment

butan-1-ol or Butanol

As it contain 4 carbon atoms an -OH group is attached at position 1.

________________

2-methylpropan-2-ol

In this -OH and -CH₃ is attached on carbon 2

_____________

2-methylpropan-1-ol

In this -CH₃ attached at position 2 and -OH is attached on Carbon 1.

______________

Butan-2-ol

In this 4 carbons are in straight chain and a -OH group is attached on position 2 of carbon

7 0

4 years ago

Please help I’m timed !!!

Rashid [163]

Answer:

b. $\% diss =4.4x10^{-2}\%$

Explanation:

Hello there!

In this case, given the ionization reaction of HClO as weak acid:

$HClO\rightleftharpoons H^++ClO^-$

We can write the equilibrium expression as shown below:

$Ka=3.5x10^{-8}=\frac{[H^+][ClO^-]}{[HClO]}$

In such a way, via the definition of x as the reaction extent, we can write:

$3.5x10^{-8}=\frac{x^2}{[HClO]}$

As long as Ka<<<<1 so that the x on the bottom can be neglected. Thus, we solve for x as shown below:

$x=\sqrt{3.5x10^{-8}*0.18} =\\\\x=7.94x10^{-5}M$

And finally the percent dissociation:

$\% diss=\frac{x}{[HClO]} *100\%\\\\\% diss=\frac{7.94x10^{-5}M}{0.18}*100\% \\\\\% diss =0.044\%=4.4x10^{-2}\%$

Which is choice b.

Best regards!

6 0

3 years ago