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sammy [17]
3 years ago
14

How many valence electrons are present in this atom?

Chemistry
1 answer:
Drupady [299]3 years ago
5 0

Answer:

This atom has 1 valence electron

Explanation:

Step 1: Data given

The ionization energy for the following element is:

I 496

II 4562

III 6912

IV 9544

V 13353

The element that has this ionization energy is sodium (Na)

Sodium has 11 electrons:

2 electrons on the first shell

8 electrons on the second shell

1 electron on the outer shell = 1 valence electron

This atom has 1 valence electron

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In a 1.0× 10–6 M solution of Ba(OH)2(aq) at 25 °C, identify the relative molar amounts of these species.
Marysya12 [62]
Thank you for posting your question here. Below is the solution:

HNO3 --> H+ + NO3- 
<span>HNO3 = strong acid so 100% dissociation </span>
<span>** one doesn't need to find the molarity of water since it is the solvent </span>

<span>0M HNO3 </span>
<span>1x10^-6M H3O+ </span>
<span>1x10^-6M NO3- </span>
<span>1x10^-8M OH-.....the Kw = 1x10^-14 = [H+][OH-] </span>
<span>you have 1x10^-6M H+ so, 1x10^-14 / 1x10^-6 = 1x10^-8M OH- </span>


<span>1x10^-6 Ba(OH)2 = strong base, 100% dissociation </span>
<span>1x10^-6M Ba2+ </span>
<span>2x10^-6M OH- since there are 2 OH- / 1 Ba2+ </span>
<span>0M Ba(OH)2 </span>
<span>5x10^-9M H3O+</span>
4 0
3 years ago
Ayuda es urgente!! el tronco de madera y las cenizas pesan lo mismo ?​
skad [1K]

Answer:

Spanish

Explanation:

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3 0
2 years ago
Many computer chips are manufactured from silicon, which occurs in nature as SiO2. When SiO2 is heated to melting, it reacts wit
riadik2000 [5.3K]

Answer:

A) SiO2 is the limiting reactant

B) Theoretical yield= 72333.3g

C) % yield =91.5%

Explanation:

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According to the balanced reaction equation,

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3 years ago
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larisa [96]

<span>fragmentation that is the answer</span>
7 0
3 years ago
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Bingel [31]

Answer:

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