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docker41 [41]
2 years ago
13

Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below.

Chemistry
1 answer:
Harman [31]2 years ago
5 0

Can you please add a picture of the case??

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What is the atomic number of an atom that has fie neutrons and four electrons
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Answer:

4

Explanation:

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Familiar solutions can have a wide range of pH levels. According to the chart, which is the strongest acid, based on its pH leve
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Part 1--Gastric acid

Part 2--one hundred times

Part 3--Baking Soda

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Convert 6.33×10−6 cg to nanograms.
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5.73e+8 hope this help
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Please help me with this friends.​
Radda [10]
Where is the picture to this?
3 0
3 years ago
The iodine "clock reaction" involves the following sequence of reactions occurring in a reaction mixture in a single beaker. 1.
Mars2501 [29]

C: 0.012 mol.

<h3>Explanation</h3>

Start with 0.0020 moles of iodate ions {\text{IO}_{3}}^{-}.

How many moles of iodine \text{I}_2 will be produced?

{\text{IO}_{3}}^{-} converts to \text{I}_2 in the first reaction. The coefficient in front of \text{I}_2 is three times the coefficient in front of {\text{IO}_{3}}^{-}. In other words, each mole of {\text{IO}_{3}}^{-} will produce three moles of \text{I}_2. 0.0020 moles of {\text{IO}_{3}}^{-} will convert to 0.0060 moles of \text{I}_2.

How many moles of thiosulfate ions {\text{S}_2\text{O}_3}^{2-} are required?

\text{I}_2 reacts with {\text{S}_2\text{O}_3}^{2-} in the second reaction. The coefficient in front of \text{I}_2 is twice the coefficient in front of {\text{S}_2\text{O}_3}^{2-}. How many moles of {\text{S}_2\text{O}_3}^{2-} does each mole of \text{I}_2 consume? Two. 0.0060 moles of \text{I}_2 will be produced. As a result, 2 \times 0.0060 = 0.0120 moles of {\text{S}_2\text{O}_3}^{2-} will be needed.

6 0
3 years ago
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