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Nataliya [291]
2 years ago
7

Which isotope is most commonly used in the radioactive dating of the remains of organic materials?

Chemistry
1 answer:
Zarrin [17]2 years ago
8 0
(1) 14C also known as Carbon-14, is used to radio-date organic materials as well as earth materials.
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Carboxylic acids and alcohols have higher boiling point than other hydrocarbons due to their polarity and from the fact that they form very strong intermolecular hydrogen bonding. This is due to the large difference in their electronegativity that forms between the oxygen and the hydrogen atom. 

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The melting point of the alkali metals (increased/decreases) from lithium to francium
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The melting point would decrease
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3 years ago
Examine the Lewis structure.
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The middle hydrogen is bonded to 2

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What is a valence electron and why are they so important to a chemist?
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3 0
3 years ago
The PH solution of NH3 of 0.950molar solution is 11.612. find the Kb​
Vaselesa [24]

Answer:

1.8 x 10⁻⁵

Explanation:

 NH3(aq)  +  H2O(l)  ⇄ NH4⁺(aq)  +   OH⁻(aq)

I  0.95                              0                    0

C -x                                 +x                  +x

E 0.95-x                           x                    x

Kb= [NH₄⁺] [OH⁻] / (  NH₃) = x²/ (0.95-x )

P(OH) = 14-PH = 14-11.612 = 2.388

(OH)⁻¹ = 10⁻²°³⁸⁸ = 4.09 x 10⁻³ = x

Kb = (4.09 x 10⁻³)²/ (0.95-4.09 x 10⁻³)

= 1.8 x 10⁻⁵

8 0
3 years ago
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