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Alexus [3.1K]
3 years ago
13

Jonah observes the sun through a special filter telescope during a total solar eclipse. He sees a red ring and a faint white rin

g that looks like a crown. Which parts of the sun is he seeing
Chemistry
2 answers:
Dafna11 [192]3 years ago
5 0
Chromosphere and corona
andrey2020 [161]3 years ago
5 0

Answer:

<u><em>The answer is</em></u>: <u>The chromosphere and the solar corona.</u>

<u />

Explanation:

<u>The chromosphere</u> <em>is the layer of the solar atmosphere located above the photosphere.</em> It is very faint and reddish in color when it becomes visible, <em>for a few seconds</em>, at the beginning and end of an eclipse of the Sun.

<u>The solar corona</u> <em>is the outer part of its atmosphere, which extends over a million kilometers, enters the interplanetary space and</em> can be observed in total eclipses of the Sun when the Moon covers the solar disk.

<u><em>The answer is</em></u>: <u>The chromosphere and the solar corona.</u>

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Which of the following compounds has the most deshielded protons?A) CH3ClB) CH3IC) CH3BrD) CH4
Korolek [52]

Given :

Some compounds :

A)\ CH_3Cl\ B)\ CH_3I\ C)\ CH_3Br\ D)\ CH_4 .

To Find :

Which of the following compounds has the most deshielded protons .

Solution :

Deshielded means nucleus whose chemical shift has been increased due to removal of electron density, magnetic induction, or other effects .

In simple words deshielding means the ability to shift protons .

Now , among Cl , I , Br and H . Cl is the most electron negative .

Therefore , deshielding will be more in CH_3Cl .

Hence , this is the required solution .

6 0
3 years ago
How many grams of Co3+ are present in 2.34 grams of cobalt(III) nitrite?
Assoli18 [71]

Answer:

m_{Co^{3+}}=0.563gCo^{3+}

Explanation:

Hello there!

In this case, since these mole-mass relationships are understood in terms of the moles of the atoms forming the considered compound, we first realize that the chemical formula of the cobalt (III) nitrate is Co(NO₃)₃ whereas there is a 1:1 mole ratio of the cobalt (III) ion (molar mass = 58.93 g/mol) to the entire compound. In such a way, we first compute the moles of the salt (molar mass = 58.93 g/mol) and then apply the aforementioned mole ratio to obtain the grams of the required cation:

m_{Co^{3+}}=2.34gCo(NO_3)_3*\frac{1molCo(NO_3)_3}{244.95 gCo(NO_3)_3} *\frac{1molCo^{3+}}{1molCo(NO_3)_3} *\frac{58.93gCo^{3+}}{1molCo^{3+}} \\\\m_{Co^{3+}}=0.563gCo^{3+}

Best regards!

4 0
2 years ago
If the heat of reaction is negative, that means that:
Crazy boy [7]

Answer:

if the heat of reaction is positive, the reaction is said to be endothermic; if negative, exothermic.

Explanation:

hope this helps

i am so sorry if this is the wrong answer

4 0
2 years ago
in the reaction mgcl2 + 2koh mg(oh)2 + 2kcl, if 3 moles mgcl2 are added to 4 moles koh what determines how much mg(oh)2 is made
otez555 [7]
Every mole of MgCl2 reacts with 2 moles of KOH, therefore the 4 moles of KOH will only react with 2 moles of MgCl2, making it the limiting reagent and therefore KOH determines how much Mg(OH)2 is produced.
6 0
3 years ago
Read 2 more answers
Which of the following are properties of metalloids?
harkovskaia [24]

Answer:

all of these are properties of metalloids

3 0
2 years ago
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