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cricket20 [7]
3 years ago
11

What are the chemical components of a dna molecule??

Chemistry
2 answers:
sveticcg [70]3 years ago
6 0
It consists of three components: 
*Phosphate<span>, a sugar called </span>deoxyribose<span>,
*Four </span>nitrogenous bases named as adenine<span>, guanine, </span>cytosine<span>, and </span>thymine<span>. 

</span>
vredina [299]3 years ago
4 0
Each dna molecule consists of <span>a phosphate group, a sugar group and a nitrogen base. The 4 nitrogen bases are adenine, thymin, guanine, cytosine. </span>
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24.0 mL of a 0.120 M Ca(OH)2 solution is required to titrate 160 mL of an HCl solution to its equivalence point. Find the moles
Alex787 [66]
T<span>he balanced reaction is as follows;
Ca(OH)</span>₂<span> + 2HCl ---> CaCl</span>₂<span> + 2H</span>₂<span>O
  stoichiometry of Ca(OH)</span>₂<span> to HCl is 1:2
number of moles of Ca(OH)</span>₂<span> reacted = 0.120 mol/L x 0.0240 L = 0.00288 mol according to molar ratio of 1:2 number of HCl moles reacted = twice the number of Ca(OH)</span>₂<span> moles reacted
number of HCl moles reacted = 0.00288 mol x 2 = 0.00576 mol
number of HCl moles in 160 mL - 0.00576 mol
therefore number of HCl moles in 1000 mL - 0.00576 mol / 160 mL x 1000 mL = 0.036 mol
molarity of HCl = 0.036 M</span>
7 0
2 years ago
Read 2 more answers
What’re the answers?
nikdorinn [45]
7. A conclusion is an educated guess,
or, prediction, about what will happen after the experiment.

8. In observation we use all five senses to gather information.

9. In result we analyze and summarize and ask if the hypothesis was correct.

10. Something that changes or varies in an experiment is called variable.


Ans:
Conclusion
Observation
Results
Variable
3 0
3 years ago
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4 0
2 years ago
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AURORKA [14]

Answer:

A

Explanation:

the correct answer is A

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2 years ago
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