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Sliva [168]
3 years ago
11

Which is best illustrated by Watson and Crick's ball-and-stick model of DNA? the importance of sticking to established methods o

f science the role of creativity in scientific discovery the value of individual scientists working independently from one another the importance of carrying out procedures that can be replicated Mark this and return Save and Exit Next Submit
Chemistry
1 answer:
77julia77 [94]3 years ago
8 0

Answer:

B. the role of creativity in scientific discovery

Explanation:

Watson and Crick's ball-and-stick model of DNA demonstrates the importance of creativity in science. Creativity involves having a questioning mind that is always searching for answers and which employs logical reasoning to arrive at these answers. After Rosalind Franklin obtained an X-ray diffraction of DNA, Scientists Watson and Crick expanded on this knowledge by creatively organizing ball and sticks in a manner that represenseted the structure of the DNA.  

This simple creative act led to more discoveries about the DNA including the facts that their was a pairing wherein Adenine paired with Thymine and Cytosine paired with Guanine. They also found that the DNA structure could be unzipped and that copying was also possible. They used the simple things around them to arrive at this conclusion. This is an example of the importance of creativity in science.

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Convert 9.32x 10 23ª atoms of au to moles of au
7nadin3 [17]

Answer:

\huge\boxed{\sf no.\ of\ moles = 1.55\ moles }

Explanation:

<u>Given:</u>

Number of atoms = 9.32 \times 10^{23} atoms

Avogadro's Number = 6.023 \times 10^{23} atom / mol

<u>Required:</u>

Moles = ?

<u>Formula:</u>

\displaystyle No.\ of\ moles = \frac{no. \ of \ atoms }{avogadro's \ no.}

<u>Solution:</u>

\displaystyle no. \ of \ moles = \frac{9.32\times 10^{23}}{6.023 \times 10^{23}}

no. of moles = 1.55 moles

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
5 0
3 years ago
What is the concentration of a solution prepared by placing 20. mL of 0.12 M K2S in a graduated cylinder and pouring water until
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Answer: 0.024 M

Explanation:

According to the neutralization law,

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where,

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Putting in the values we get:

0.12M\times 20.0=M_2\times 100.0

M_2=0.024

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