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Arlecino [84]
3 years ago
10

[OU.04] An astronomer has proposed a new theory about the evolution of the universe. Which of these would prevent the proposed t

heory from being discarded? (2 points) discussion about the theory on television explanation of the theory by some students publication of the theory in a science magazine acceptance of the theory by a majority of scientists
Chemistry
2 answers:
koban [17]3 years ago
6 0

Answer:

Acceptance of the theory by a majority of scientists.

Explanation:

A proposed theory could be rejected when it is tested and does not provide the same results by different scientists. If same evidence is gathered by majority of the scientists, then it is accepted. A new theory is accepted when it gives the same results on multiple testing.

Oduvanchick [21]3 years ago
5 0
Acceptance of the theory by a majority of scientists
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Calculate the pH of a solution with an H+ ion concentration of 9.36 x 10-3 M ?
mel-nik [20]

Answer:

The answer is 2.03

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ {H}^{+} ]

where H+ is the Hydrogen ion concentration

From the question we have

pH =  -  log(9.36 \times  {10}^{ - 3} )  \\  = 2.02872415...

We have the final answer as

<h3>2.03 </h3>

Hope this helps you

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3 years ago
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Cu is in FCC structure. We know that even at close to melting temperature, vacancies are still sparsely distributed, i.e., it is
sveticcg [70]

Answer:

6

Explanation:

FCC is face centered cubic lattice. In FCC structure, there are eight atoms at the eight corner of the cubic unit cell and one atom centered in each of the faces. FCC unit cells consist of four atoms, (8/8) at the corners and (6/2) in the faces.

Given that, Cu has FCC structure and it contains a vacancy at origin (0, 0, 0). And there is no other vacancy directly adjacent to the vacancy at the origin. So, all the adjacent positions contain Cu atoms. Hence, the total number of adjacent atoms of the vacancy at origin can jump into this vacancy.

the above FCC unit cell clearly indicates that there are six adjacent atoms adjacent to the vacancy at origin

So, the total number of adjacent atoms of the vacancy at origin can jump into this vacancy is 6.

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3 years ago
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