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Ulleksa [173]
3 years ago
8

Which of the following includes the correct pairing of volcano and its formation? Cinder volcano; large, explosive eruptions Cin

der volcano; alternating quiet and explosive eruptions Shield volcano; large, quiet eruptions Composite volcano; large; violent eruptions
Chemistry
2 answers:
noname [10]3 years ago
6 0

Shield volcano; large, quiet eruptions

Anarel [89]3 years ago
4 0
The correct pairing of the volcano to its formation would be the composite volcano wherein it usually yields large and violent eruptions. In addition to that, composite volcanoes or also known as the stratovolcano is usually made of materials containing increasing layers of hardened lava.
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there are two parts of photosynthesis- the light reactions and the dark reactions. what is the end product of the dark reactions
SpyIntel [72]
The answers is ATP it  took me a long time to find it but here you go. hope i helped
7 0
3 years ago
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Ketones undergo a reduction when treated with sodium borohydride, NaBH4. The product of the above reaction has the following spe
Anna71 [15]

Answer:

The product is cyclohexanol

Explanation:

Firstly,

A ketone undergo a borohydride reduction reaction to form an alcohol as below,

R-CO-R'  ⇒ R-CO(OH)-R'

  1. IR Spectrum confirms that alcohol group is existed with the peak at 3400 cm⁻¹
  2. From 1H-NMR, the product has 10 hydrogen atoms, the MS suggest that the formula is C₅H₁₀O (M = 86). With this formula, the alcohol is monosaturated. Since, the substance already underwent reduction reaction, the only way to suggest a monosaturated compound is a cyclic alcohol. So the compound is cyclopentanol.
  3. Check with other spectroscopic properties,
  • 3 signals of 13C NMR confirms the structure is symmetrical, δ 24.2, (-<u>C</u>H₂-CH₂-CH(CH₂-)-OH), δ 35.5 (-CH₂-<u>C</u>H₂-CH(CH₂-)-OH), δ 73.3 (-CH₂-CH₂-<u>C</u>H(CH₂-)-OH).
  • 1H NMR confirms,

        1.56 δ (4H, triplet) - (-C<u>H</u>₂-CH₂-CH-OH) ; triplet as coupling with 2 H,

        1.78 δ (4H, multiplet)  - (-CH₂-C<u>H</u>₂-CH-OH); multiplet as coupling with 2H of CH₂, 1 H of CH

         3.24 δ (1H, quintet); - (-CH₂-CH₂-C<u>H</u>(CH₂-)-OH), coupling with4 H of 2 group of CH₂

         3.58 δ (1H, singlet); - (-CH₂-CH₂-CH(CH₂-)-O<u>H</u>), hydrogen of alcohol group, not tend to coupling with other hydrogen

4 0
3 years ago
Help please please please please
Rom4ik [11]

Answer:

D. 18.7 grams

Explanation:

The coefficients are the key.

Create a proportion with them, and the molar mass, and then solve for x:

\frac{2}{3}  =  \frac{x}{28}  \\ 3x = 2(28) \\ 3x = 56 \\ x = 18.666... = 18.7

7 0
3 years ago
Arachidonic acid and pge1 are both carboxylic acids with atoms. the differences are that arachidonic acid contains and no other
hichkok12 [17]
Answer:
             <span>Arachidonic Acid and PGE</span>₁<span> are both carboxylic acids with <u>Twenty Carbon</u> atoms. The differences are that Arachidonic acid contains <u>Four <em>cis</em> Double Bonds</u> and no other functional groups, whereas PGE</span>₁<span> has <u>One <em>Trans</em> Double Bond, Two Hydroxyl and One Ketone Functional Groups.</u>. In addition, a part of the PGE</span>₁<span> chain forms a <u>Five Membered Ring</u>.

Structures of Both Arachidonic Acid and PGE</span>₁ are shown Below,

8 0
3 years ago
The basic structure of an amino acid contains the amine group, NH2, and a carboxylic acid group separated by one or more carbon
OLEGan [10]

The answer would be True

3 0
3 years ago
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