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mart [117]
4 years ago
9

Neither dry soil nor pure water conducts electricity. But wet soil will conduct electricity. Explain why this happens?

Chemistry
1 answer:
kipiarov [429]4 years ago
4 0

Pure water does not have enough ions to conduct electricity. A mixture of metals such as iron, zinc and copper in the wet soil can trigger electrolysis that requires excess energy in the form of over potential to conduct electricity. The excess energy is needed due to limited self-ionization of water. The wet soil then can conduct current when positive and negative ions are present. The water ions begin to flow from anode (positive electrode) to cathode (negative electrode) to be oxidize and produce electricity.

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The condensation reaction that forms nucleic acid polymers occurs between a _____ group on one nucleotide and a _____ group on a
olganol [36]

Answer:

  • The condensation reaction that forms nucleic acid polymers occurs between a <u><em>Phosphate</em></u> group on one nucleotide and a <u><em>hydroxyl group of sugar</em></u>  on a second nucleotide.

Explanation:

  • When nucleotides polymerize to form nucleic acids, the hydroxyl group attached to the 3′ carbon of a sugar of one nucleotide forms an ester bond to the phosphate of another nucleotide, eliminating a molecule of water.

Summary:

So the phosphate group of one nucleotide form bond with the hydroxyl group of an other nucleotide with the elimination of water molecules.

8 0
3 years ago
Nic bought 12 pens for 2$ each and 12pads of paper for 3$ each. Write two expressions for how nic could calculate his total.Writ
DENIUS [597]
12 pens for writing chemical formulas cost
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1)
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12*3=36
2)
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7 0
3 years ago
Where does oxidation occur in an electrochemical cell?
AlladinOne [14]
Option No. 1 at the cathode in both an electrolytic cell and a voltaic cell

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8 0
4 years ago
Read 2 more answers
What is the ph of a 7.5×10-3m oh- solution? <br><br> ph=?
BlackZzzverrR [31]
We will assume complete dissociation.
Since we have the molarity of OH solution, we can calculate the p(OH) as follows:
p(OH) = -log(molarity of OH) = -log(<span>7.5×10-3) = 2.1249

It is known that: p(H) + p(OH) = 14
Therefore, p(H) can be calculated as follows:
p(H) = 14 - p(OH) = 14 - 2.1249 = 11.875</span>
7 0
4 years ago
Need help on 8 plz some one
alexdok [17]
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https://study.com/academy/answer/how-can-subsidence-lead-to-the-formation-of-sedimentary-rock.html
4 0
3 years ago
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