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Vaselesa [24]
3 years ago
8

Disccuss what happens to copper in photochromic lenses from a redox perspective.

Chemistry
1 answer:
larisa86 [58]3 years ago
8 0
The simplest ion that copper forms in solution is the typical blue hexaaquacopper(II) ion - [Cu(H2O)6]<span>2+</span>
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Explain the composition of dna nucleotides and the structure of the dna molecule need help
Kaylis [27]

A nucleotide is composed of a phosphate group, sugar, and nitrogen base. DNA is made of 2 strands of nucleotides linked together by covalent bonds between the phosphate and sugar of each nucleotide. The strands of nucleotides are linked together by hydrogen bonds creating DNA. Hope this helps and sorry if I made a mistake.

4 0
3 years ago
Which statement best explains why gneiss is composed of layers but there are no layers in granite?
Mandarinka [93]

Gneiss is a sedimentary rock and granite is a metamorphic rock.

<h3>What are rocks?</h3>

Rocks are geological hard materials that are made up of various types which include:

  • Sedimentary rocks: These are rocks that made up of various layers formed from sediments. Example is the gnesis.

  • Metamorphic rocks: These are rocks that are form from pre existing rocks that undergoes some transformation. Example is granite

Therefore, Gneiss is a sedimentary rock and granite is a metamorphic rock.

Learn more about rocks here:

brainly.com/question/398139

#SPJ1

8 0
2 years ago
What is the mass of one mole of carbon-12?
velikii [3]

Answer:

Hello

12 grams

The mass of one mole of carbon-12 atoms is 12 grams.

Hope it helps You.....

Explanation:

4 0
3 years ago
Read 2 more answers
How many grams of hydrogen are necessary to react completely with 50.0 g of nitrogen
nlexa [21]

Answer:

25.0 grams

Explanation:

7 0
2 years ago
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Describe the formation of a hydrogen bond and explain how it differs from a covalent or ionic bond
vlada-n [284]

Answers:

                  Hydrogen bond is formed when positive end of one molecule attracted negative end of other molecule. The concept is similar to magnetic attraction where opposite poles attract each other.

Explanation:

                   While understanding hydrogen bond, two terms are important, one is electronegativity (tendency of atoms to attract electrons towards itself) and other is dipole (separation of positive and negative charge in a molecule). Hydrogen bond is always formed between hydrogen atom and other atoms having electronegativity different than hydrogen.

Differ from Ionic and Covalent Bonds:

                        Hydrogen bond is weaker than ionic and covalent bond. Ionic and covalent bonds are intramolecular (within the molecule) whereas hydrogen bond is intermolecular (between molecules).

Example:

       Formation of hydrogen bonding in water.


3 0
3 years ago
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