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ohaa [14]
2 years ago
10

In 1980 the Mt. St. Helens volcano erupted and impacted thousands of square miles of forest.Some areas are still undergoing seco

ndary succession where
Chemistry
1 answer:
omeli [17]2 years ago
3 0

Answer:

Explanation:

1: Pioneer species are the first to colonize: During primary succession in lava on Maui, Hawaii, succulent plants are the pioneer species. After weathering breaks down the lava into the soil, the plants are able to take root. These plants will help to further change the soil by adding nutrients to it.

The first organisms to appear in areas of primary succession are often mosses or lichens. These organisms are known as pioneer species because they are the first species present; pioneer species must be hardy and strong, just like human pioneers.

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At 298 K, Kc = 1.45 for the following reaction 2 BrCl (g) Br2(g) + Cl2(g) A reaction mixture was prepared with the following ini
tester [92]

Answer:

[BrCl]=0.02934M

[Br2]=[Cl2]=0.03533M

Explanation:

First, consider the Kc definition:

1.5=K_{c}=\frac{[Br_{2}][Cl_{2}]}{[BrCl]^{2}}

It is necessary to define a new variable, 'x', as the amount of moles of Br2 that are produced. If 'x' moles of Br2 are produced, the moles of the compounds will be calculated as;

n_{Br_{2}}=n_{{Br_{2}}^{0}} +x\\n_{Cl_{2}}=n_{{Cl_{2}}^{0}} +x\\n_{BrCl}=n_{{BrCl}}^{0}} -2x\\

Where the zero superscript means the initial moles.

Dividing the last equations by the volume, which is constant because the reaction does not change the total moles number (2 moles of BrCl produce 2 moles, one of Cl2 and another of Br2), we have the molarity equations for all species:

M_{Br_{2}}=M_{{Br_{2}}^{0}} +x\\M_{Cl_{2}}=\\M_{BrCl}=M_{{BrCl}}^{0}} -2x\\

And now 'x' is a change in molarity.

Replacing these in the Kc equation we have:

1.45=\frac{({M_{{Br_{2}}}^{0}}+x)({M_{{Cl_{2}}}^{0}}+x)}{({M_{{BrCl}}^{0}}-2x)^{2}}

Where the only unknown is 'x'. So, let's solve the equation:

1.45=\frac{(0.03+x)(0.03+x)}{(0.04-2x)^{2} } \\1.45(0.04-2x)^2=(0.03+x)^2\\1.45(0.0016-0.16x+4x^2)=0.0009+0.06x+x^2\\4.8x^2-0.292x+0.00142=0\\x_{1}=0.0555\\x_{2}=0.00533

The result x_{1}=0.0555 lacks of sense because it will give a negative concentration for BrCl, so the result is x_{2}=0.00533<u>.</u>

Applying the result, the concentrations at equilibrium are:

M_{Br_{2}}=M_{Cl_{2}}=0.03+0.00533=0.03533M\\M_{BrCl}=0.04-2*0.00533=0.02934M

If you calculate Kc with this concentrations it will give 1.45 as a result.

Greets, I will be happy to solve any doubt you have.

8 0
4 years ago
Can someone sell me what Asexuality means lol
densk [106]

Answer:

Asexuality is the lack of sexual attraction to others, or low or absent interest in or desire for sexual activity. It may be considered a sexual orientation or the lack thereof. It may also be categorized more widely to include a broad spectrum of asexual sub-identities.

Explanation:

8 0
3 years ago
Question 4(Multiple Choice Worth 1 points)
zepelin [54]

Answer:

OJ.J. Thomson

Explanation:

7 0
3 years ago
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¿Qué pasa con aquellas enfermedades para las cuales aún no hay vacunas?
GalinKa [24]

Answer:

In diseases that still do not have vaccines, humans would have to be much more careful not to have an injury, since vaccines are a way of having antibodies against microorganisms so that we can survive or better defend ourselves against them.

Vaccines are active acquired immunity, this means that a person who is vaccinated acquires new defenses that are manufactured by their own body, that are not vaccinated or that the vaccine does not exist are diseases that could potentiate with the life of the human being or trigger symptoms graves

Explanation:

People who are not vaccinated or suffer from pathologies that do not have vaccines do not have antibodies to fight the microorganism in the first infection, therefore the pathology develops in a much more serious, harmful and even lethal way.

Antibodies are proteins that our body manufactures by inoculating DNA structures, proteins, inactive bacteria, etc. in the form of a vaccine, these proteins are the method of recognition of said microorganism.

Thus generating that once the microorganism enters the body after the vaccine has been placed, it is recognized and eliminated.All this process written simply in the previous text happens in vaccinated people, in those who do not have the vaccine or are not vaccinated. suffer the opposite consequences for lack or deficit of acquired immunity.

Vaccination is a form of active acquired immunization and each country has a different vaccination plan according to the pathologies that prevail in the area to protect the population that lives in them.

4 0
4 years ago
To get dry ice to the triple point <br><br> PLEASE HELP !!
hram777 [196]

Answer:

4th one  i think

Explanation:

8 0
4 years ago
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