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aniked [119]
3 years ago
15

The molecule ethylbenzene is considered an....

Chemistry
1 answer:
noname [10]3 years ago
5 0
D. Cycloalkene
________________________
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Calculate the pH for the following buffer solutions with steps.
max2010maxim [7]

Answer:

Answer is shown on the paper :D

Explanation:

Remember to follow sig-figs.

5 0
3 years ago
When an atom forms a positive ion (by losing electrons). Will the radius of an ion change from the radius of an atom? Explain wi
Colt1911 [192]

Radius of the positive ion will be smaller than the radius of its parent atom.

<h3>Explanation</h3>

Sodium Na has atomic number 11. A neutral Na atom has 11 electrons. It has

  • 2 electrons in the first main shell,
  • 8 electrons in the second main shell, and
  • 1 electron in the third main shell.

Na tends to lose one electron. It would form an Na⁺ ion. The ion is positive and has ten electrons. It has

  • 2 electrons in the first main shell, and
  • 8 electrons in the second main shell.

Three of the main shells of Na contain electrons. Only two main shells contain electrons in Na⁺. The energy of the second main shell is higher than the first. It is more distant from the nucleus than the first electron shell. Similarly, the third main shell is further away from the nucleus than the second.

The outermost shell in Na is the third main shell. The outermost shell in Na⁺ is the second main shell. As a result, the outermost electrons in Na are further away from the nucleus that electrons in Na⁺. As a result, the radius of Na appears to be larger than that of Na⁺.

When an atom loses electrons to form a positive cation, it tends to lose all electron in its outermost shell (the valence shell). That will give the ion an octet, which is more stable than having one or two electrons left in the valence shell. The rule on Na shall still apply. The positive ion will have one less main shell; its radius shall be smaller than that of the parent atom.

8 0
3 years ago
How do you describe an organ
storchak [24]
An organ is a collection of cell tissue.
6 0
3 years ago
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The forensic technician at a crime scene has just prepared a luminol stock solution by adding 16.0 g of luminol to H2O creating
san4es73 [151]

Answer : The concentration of luminol in the solution is, 1.20 M.

Explanation : Given,

Mass of luminol = 16.0 g

Volume of solution = 75.0 mL

Molar mass of luminol = 177.16 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Mass of luminol}\times 1000}{\text{Molar mass of luminol}\times \text{Volume of solution (in mL)}}

Now put all the given values in this formula, we get:

\text{Molarity}=\frac{16.0g\times 1000}{177.16g/mole\times 75.0mL}=1.20mole/L=1.20M

Therefore, the concentration of luminol in the solution is, 1.20 M.

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3 years ago
How many bonds are between the two carbon atoms in C2H2?
julsineya [31]
C2H2 has 3 bonds between two carbon atoms
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