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malfutka [58]
3 years ago
15

In any sample of DNA, the amount of adenine (A) equals the amount of _____.

Chemistry
2 answers:
aivan3 [116]3 years ago
8 0
It is equal to amount of thymine
enyata [817]3 years ago
5 0

<u>Answer:</u> The correct answer is thymine.

<u>Explanation:</u>

DNA is known as deoxy ribonucleic acid. This molecule contains 4 nitrogenous bases, which are adenine (A), thymine (T), cytosine (C) and guanine(G). This molecule forms double helix structure.

Adenine formed two hydrogen bonds only with thymine and cytosine forms three hydrogen bonds only with guanine.

Thus, the amount of adenine (A) will be equal to the amount of thymine (T).

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2) Calculate the density of a rod of metal (in g/cm) with a mass of 196.41g, a diameter of 3.10
Tems11 [23]

Answer:56.98496

Explanation:

half if diameter is radius or 1.55 and double the radius is 3.10 or the length of the diameter. you have a height given, so use the radius and heaight to plug it in the circular cylinder calculator and you get 56.98496

7 0
3 years ago
Which of these is a pure substance?
scoundrel [369]
B. Sugar is a pure substance.
It is sugar because sugar is made up of one atom or molecule. 
A) penny is not correct because a penny is made up of copper, zinc, and tin.
C) ocean water is not correct because its made out of water (h2o) and salt.
D) iced tea is not correct because it takes many atoms to combine in order to make tea, then you have to add water and ice to make it an iced tea.

Hope this helps! :)
7 0
2 years ago
Read 2 more answers
In which species does phosphorous have the highest oxidation number?
nignag [31]

the compounds in which phosphorous posses the highest possible oxidation have to mention here.

The species in which phosphorous have the highest oxidation state are: H₃PO₄, P₂O₅, PCl₅

The possible oxidation state of phosphorous is III and V. The highest oxidation state is V. There are several compounds in which phosphorous posses the +5 oxidation state. Like- Phosphoric acid (H₃PO₄), phosphorous pentoxide (P₂O₅), Phosphorous chloride (PCl₅) etc.

The oxidation state of an element depends upon the valence electron the valence shell of phosphorous is 3s² 3p³. Thus there are 5 electrons, as it has vacant 3d orbital thus it can easily form compound having +5 oxidation state.

7 0
2 years ago
A sample of gas has an initial volume of 15 L and an initial pressure of 4.5 atm. If the pressure changes to 1.8 atm, what is th
olga_2 [115]

Answer:

37.5 L

Explanation:

Initial Volume, V1 = 15L

Initial Pressure P1 = 4.5 atm

Final Pressure, P2 = 1.8 atm

Final Volume V2 = ?

The relationship between these variables is given as;

P1V1 = P2V2

V2 = PIV1 / P1

Inserting the values;

V2 = 4.5 * 15 / 1.8

V2 = 37.5 L

4 0
3 years ago
Read 2 more answers
How do you do this ???
trapecia [35]
1. 254 cal = 1,062.736 joules
2. 126 cal = 527.184 joules 
3. 98 cal = 410.032 joules
4. 704 cal = 2,945.536 joules
5. 682 cal = 2,853.488 joules
5 0
2 years ago
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