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Tema [17]
3 years ago
8

Electron configuration for iron?

Chemistry
1 answer:
spayn [35]3 years ago
6 0
I'm pretty sure it's this

[Ar] 3d6 4s2

Atomic number: 26
symbol:Fe
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Express each of the following in standard form.
swat32

Answer:3.6 x 101 or 8.77 x 10-1

3 0
2 years ago
Which which atom is held together by covalent bonds?​
Sedaia [141]
Covalent bonds are strong bonds. Atoms that share pairs of electrons form molecules. A molecule is a group of atoms held together by covalent bonds. A diatomic molecule is a molecule containing only two atoms.
4 0
3 years ago
A solution has a<br> pH of 2.5.<br> Answer the following questions.<br> pOH =<br> [H]=<br> [OH]=
Sloan [31]

Answer:

pOH = 11.5

[H⁺] = 0.003 M

[OH⁻] = 3 × 10⁻¹² M

Explanation:

The computation is shown below:

Given that

pH = 2.5

Based on the above information

We know that

pH + pOH = 14  ⇒  pOH = 14 - pH

pOH = 14 - 2.5

pOH = 11.5

[H⁺] = 10^(-pH) = 10^(-2.5)

[H⁺] = 0.003 M

[OH⁻] = 10^(-pOH)

= 10^(-11.5)

= 3 × 10⁻¹² M

[OH⁻] = 3 × 10⁻¹² M

Hence, the above represents the answer

4 0
3 years ago
Complete Table G to view the effect of surface area on the rate of reaction by transferring your data from Tables D and E to Tab
alexdok [17]

Answer:

The crushed tablet dissolves fastest among the three forms.

Explanation:

The experiment is aimed at determining the effect of surface area of reactants on reaction rate.

Sodium bicarbonate tablets are provided and divided into three groups of consisting of three trials each. The temperature of the water is kept constant at 20°C. The first group consists of three tablets of sodium bicarbonate dissolved in individual trials in water. The second group consists of three quarter tablets of sodium bicarbonate dissolved in individual trials in water. The third group consists of three crushed tablets of sodium bicarbonate dissolved in individual trials in water.

The results shows that the average time for the dissolution of the first group is 51 seconds; the second group is 42 seconds while the third group is 17 seconds.

Therefore, it can be concluded that increasing the surface area of reactants increases the rate of reaction. This is because more reactant molecules are exposed for dissolution by water with increase in surface area.

4 0
2 years ago
While setting up a beaker to boil a solution on a hot plate, you notice that the stirring is erratic and unstable. What should y
Crank

Given what we know, we can confirm that if while setting up a beaker you notice that the stirring is erratic and unstable, you should immediately turn off the stirring mechanism.

<h3>Why turn off the stirring mechanism?</h3>
  • The beaker is boiling a substance, making it very dangerous.
  • Unstable and erratic stirring can cause spilling or even a broken beaker.
  • The best course of action is to disable the stirring until the problem is fixed.
  • This will ensure the safety of everyone involved.

Therefore, we can confirm that in order to ensure the safety of all participants, if while setting up a beaker you notice that the stirring is erratic and unstable, you should immediately turn off the stirring mechanism.

To learn more about lab safety visit:

brainly.com/question/20103808?referrer=searchResults

5 0
2 years ago
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