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Naily [24]
2 years ago
10

An atom with 4 protons, 5 neutrons, and 4 electrons has an atomic mass of _____ amu. (Enter a whole number.) Numerical Answers E

xpected! Answer for Blank 1:
Chemistry
2 answers:
igor_vitrenko [27]2 years ago
8 0
Beryllium - Atom Mass: 9
mariarad [96]2 years ago
7 0
Your answer is: 9 amu

5 neutrons + 4 protons = 9 amu

Hope this helped :)
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The Big Bang Theory is a widely accepted theory in physics that states all the universe began with a huge explosion and form then matters expanded in space at the same time that it is cooling.

Therefore, with this data, we can see that the Big Bang Theory states that the chemical composition of the universe associated with hydrogen and helium modified since this explosion.

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Answer:

p-fluoronitrobenzene and sodium phenoxide is more appropriate

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An ipso substitution is required to form p-nitrophenyl phenyl ether.

For this ipso substitution, an alkoxide anion needs to attack as a nucleophile at the carbon atom attached to fluorine atom and thereby substitute that F atom.

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p-fluoronitrobenzene is a good choice for nucleophilic attack by alkoxide anion as compared to fluorobenzene due to higher positive charge density at carbon atom directly attached to F atom. Higher positive charge density arises due to presence of electron withdrawing resonating effect og nitro group at para position.

So, p-fluoronitrobenzene and sodium phenoxide is more appropriate

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3 years ago
Which statement is true about a pseudoscientific?​
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Answer:

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defon

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Scientific experiments need to be repeated so that scientists can make sure the results are as accurate as possible.

Explanation:

The point of a scientific experiment is to find the answer to a question. If a scientist performs an experiment only one time, they might find an answer to their question. However, they might have messed something up, so the answer is completely wrong. Doing an experiment momre than once can help a scientist make sure that their answer is correct. I hope this helps!

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Answer:

<em><u>30.11x1</u></em><em><u>0</u></em><em><u>²</u></em><em><u>³</u></em>

Explanation;

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