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Lady bird [3.3K]
3 years ago
8

Which layer of the sun is only seen during the height of a total solar eclipse? A. Photosphere B. Corona C. Convection zone D. c

ore
Chemistry
2 answers:
Oduvanchick [21]3 years ago
6 0

Answer B. Corona! (Just posting this so he can get brainliest!)

alisha [4.7K]3 years ago
4 0

Question:Which layer of the sun is only seen during the height of a total solar eclipse?

Answer: Corona

Explanation:During a total solar eclipse  parts of the Sun that we normally can't see become visible but during it we can see the corona

question answered by

(jacemorris04)

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The activation energy for a reaction is changed from 184 kJ/mol to 59.0 kJ/mol at 600. K by the introduction of a catalyst. If t
slega [8]

Answer:

The catalyzed reaction will take time of 5.11\times 10^{-8} years.

Explanation:

According to the Arrhenius equation,

K=A\times e^{\frac{-Ea}{RT}}

The expression used with catalyst and without catalyst is,

\frac{K_2}{K_1}=\frac{A\times e^{\frac{-Ea_2}{RT}}}{A\times e^{\frac{-Ea_1}{RT}}}

\frac{K_2}{K_1}=e^{\frac{Ea_1-Ea_2}{RT}}

where,

K_2 = rate of reaction with catalyst

K_1 = rate of reaction without catalyst

Ea_2 = activation energy with catalyst  = 59.0 kJ/mol = 59000 J/mol

Ea_1 = activation energy without catalyst  = 184 kJ/mol = 184000 J/mol

R = gas constant

T = temperature = 600K

Now put all the given values in this formula, we get:

\frac{K_2}{K_1}=e^{\frac{184,000 kJ-59000 kJ}{R\times 300}}=7.632\times 10^{10}

The reaction enhances by 7.632\times 10^{10}  when catalyst is present.

Time taken by reaction without catalyzed = 3900 years

Time taken by reaction with catalyzed = x

x=\frac{3900 year}{7.632\times 10^{10}}=5.11\times 10^{-8} years

The catalyzed reaction will take time of 5.11\times 10^{-8} years.

8 0
3 years ago
What properties do atoms of the same element share? Select all that apply.
Tcecarenko [31]
I believe A is you’re answer
6 0
3 years ago
Read 2 more answers
What is the correct formula that would result from the combination of the two ionic species?
Soloha48 [4]

Answer:

CsCl

Explanation:

The ionic species are:

           Cs⁺   and Cl⁻

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If you are mixing a solution in a spray bottle with 15 ounces of water, how much chlorine do you need to add for the correct rat
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15 ounces so you can make it even
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Alkaline batteries are non-rechargeable.<br> Why do alkaline batteries eventually stop working?
scoray [572]

Answer:

Alkaline batteries stop working when all of the manganese dioxide has been converted.

Explanation: Hope it helps you :)))

Have a good day

4 0
2 years ago
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