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Elden [556K]
3 years ago
5

3. Which weather technology is used to gather pressure, wind speed, and other first-hand observations of hurricanes that are out

at sea?
satellites
Doppler radar
weather balloons
reconnaissance aircraft
Chemistry
2 answers:
djverab [1.8K]3 years ago
8 0
The Doppler radar hope this helps :P
Licemer1 [7]3 years ago
7 0

Its satellites my dude / dudette : 3

 

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Answer:

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Explanation:

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3 years ago
Plz help ......<br><br>Na+ has completely filled k and L shells . explain<br>​
inessss [21]

Explanation:

Na represents the neutral element; Sodium. Because of it's atomic number of 11, It has 11 electrons.

Na+ on the other hand represents a cation. The sodium ion has lost an electron, hence the total number of electrons it has = 10.

The K and L shells each have maximum number of electrons they can accommodate. This is given by the formular; 2n^2

K shell = 2 (1)^2 = 2 electrons

L shell = 2 (2)^2 = 8 electrons

Seeing as Na+ has 10 electrons, It completely filled the K and L shells ( 2 + 8 = 10 )

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4 0
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A solution with a pH = 13 has approximately how many moles of OH– ions per liter?
GuDViN [60]

Answer :

(A) The number of moles of OH^- ions per liter is, 0.1 moles/L

(B) The number of molecules of H^+ ion is, 6.022\times 10^{10}

(C) The pH of the solution will be, 4

<u>Solution for part A :</u>

First we have to calculate the pOH of the solution.

As we know that,

pH+pOH=14\\\\13+pOH=14\\\\pOH=1

Now we have to calculate the moles of OH^- ion per liter.

pOH=-\log [OH^-]\\\\1=-\log [OH^-]

[OH^-]=0.1moles/L

<u>Solution for part B :</u>

First we have to calculate the H^+ ion concentration.

pH=-\log [H^+]\\\\13=-\log [H^+]

[H^+]=10^{-13}moles/L

Now we have to calculate the number of molecules of H^+ ion

As, 1 mole contains 6.022\times 10^{23} number of molecules of H^+ ion

So, 10^{-13} moles contains 6.022\times 10^{23}\times 10^{-13}=6.022\times 10^{10} number of molecules of H^+ ion

<u>Solution for part C :</u>

pH=-\log [H^+]\\\\pH=-\log (1\times 10^{-4})

pH=4

6 0
4 years ago
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How many moles of aluminum are needed to react with 3.6 mol of FeO? 2Al(s) + 3FeO(s) → 3Fe(s) +Al₂O₃(s)
almond37 [142]
2.4 moles of Aluminum
6 0
3 years ago
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