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gladu [14]
2 years ago
9

PLS HELP ASAP NO LINKS PLS WILL MARK BRAINLIEST IF CORRECT

Chemistry
1 answer:
Colt1911 [192]2 years ago
5 0

Answer:

uranium is the answer base on what I have been taught so far

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Propiedades Químicas del elemento Astato. por favor es urgente!
Zarrin [17]
I'm not to sure but try soy
4 0
3 years ago
In the ground-state electron configuration of fe3+, how many unpaired electrons are present? express your answer numerically as
Virty [35]
Answer:
            Iron has 5 unpaired electrons in Fe⁺³ state.

Explanation:

Iron having atomic number 26 has following electronic configuration in neutral state.

                             Fe =  1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d⁶

When Iron looses three electrons it attains +3 charge with following electronic configuration.

                             Fe⁺³ =  1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵

The five electrons in d-orbital exist in unpaired form as,

                          3(dz)¹, 3d(xz)¹, 3d(yz)¹, 3d(xy)¹, 3(dx²-y²)¹


3 0
3 years ago
If the copper cube had a mass of 28.7 grams and a volume of 3.2 mL, what would its density be?
Otrada [13]

Answer:

ρ=m÷v

 =28.7÷3.2

 ≈8.97 g/m³

3 0
3 years ago
Grams of sodium 9.5g in NaCl <br>​
Kitty [74]

Answer:

3.68 grams.

Explanation:

First we <u>convert 9.5 g of NaCl into moles of NaCl</u>, using its<em> molar mass</em>:

9.5 g ÷ 58.44 g/mol = 0.16 mol NaCl

In<em> 0.16 moles of NaCl there are 0.16 moles of sodium </em>as well.

We now <u>convert 0.16 moles of sodium into grams</u>, using <em>sodium's molar mass</em>:

0.16 mol * 23 g/mol = 3.68 g

4 0
2 years ago
HELP FAST FOR BRAINLIEST
krek1111 [17]

Answer:

only ones ik

14: dependant

18: constraints

3 0
3 years ago
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