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Ahat [919]
3 years ago
6

Answer all 3 parts correctly and I will give you a Brainliest, 5-star rating, and thanks on question and profile

Chemistry
2 answers:
Nat2105 [25]3 years ago
6 0

Answer:

different types of waves are due to how and where they are formed

Explanation:

Don't give me brainliest I only know first part.

pishuonlain [190]3 years ago
4 0

Answer:

Mark me as brain list plz for fun

Explanation:

The picture is blurry

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Consider these ground-state ionization energies of oneelectron species:
SVETLANKA909090 [29]

Answer:

Explanation:

general expression for the ionization energy of any one-electron species.

=  z² x ground level energy / n²

z is atomic no , n is energy level .

ground level energy of

 H = 1.31 x 10³ kJ/mol

He⁺ = 2² x  1.31 x 10³ kJ/mol  =  5.24 x 10³ kJ/mol

Li²⁺ = 3² x  1.31 x 10³ kJ/mol   = 1.18 x 10⁴ kJ/mol

b ) the ionization energy of B⁴⁺.

= 5² x 1.31 x 10³ kJ/mol  = 32.75 x 10³ kJ/mol  

c )  minimum energy required to remove the electron from the n = 3 level of He⁺ per mole

= 5.24 x 10³ / 9  kJ/mol

= 5.82 x 10² kJ/mol

= 5.82 x 10² x 10³ / 6.02 x 10²³ J

.9667 X 10⁻¹⁸ J

= .9667 X 10⁻¹⁸ / 1.6 X 10⁻¹⁹ eV

= 6.042 eV

= 1237.5 / 6.042

= 204.82 nm

=

d )

3 0
3 years ago
HELP ASP
Kipish [7]

True becuase the substance changed into another substance which is a example of a chemical reaction.

3 0
3 years ago
What valence electron number do they all have in common
katovenus [111]
If they are in the same group they have the same valence electrons but since I cannot see what you’re talking about I’m not sure what your question is
5 0
2 years ago
__________ is considered to be the greatest solvent in the world because it can dissolve so many substances.
allochka39001 [22]
The correct answer is c. water. 
6 0
3 years ago
What volume of 1.5M NaOH is needed to provide 0.75 mol of NaOH?
lutik1710 [3]
1.5M NaOH so we've 1.5 moles of NaOH in 1L of solution

1L = 1000 ml

1.5 moles of NaOH ------------in------------- 1000 ml
0.75 moles of NaOH ----------in---------------x ml
x = 500 ml

<em><u>answer: C</u></em>
5 0
3 years ago
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