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4 years ago

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This is how zirconium appears in the periodic table. Rounded to the nearest whole number, how many electrons are in an atom of z

irconium? 40 51 91 131

2 answers:

Ber [7]4 years ago

4 0

Answer:

40

Step-by-step explanation:

Zirconium is the 40th element in the periodic table. It means its atomic number (the number of protons inside the nucleus) is 40. But atoms are electrically neutral: this means that their number of electrons matches the number of protons. Therefore, since the atom of zirconium has 40 protons, it also has 40 electrons.

Marina86 [1]4 years ago

3 0

The answer is:

Rounded to the nearest whole number, there are 40 electrons in an atom of Zirconium.

I hope this helps :D

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3 years ago

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Karo-lina-s [1.5K]

<u>Answer:</u>

So all the possible solutions are:

$\bold{523,~400,~379~and,~378.6}$

<u />

<u>Solution Steps:</u>

<em>First you need to solve the real inequality to understand how to find the rest of the possible equations. </em>

<u>Add 78 to both sides:</u>

<u /> $78+78=$ Cancels Out

$300+78=378$

<em>So now we know the real answer, but it ask for all possible answers. </em>

(Means anything larger than 300 when you plug it into x - 78 > 300.)

<u>Numbers that are greater than 378:</u>

1.) $377-78=299 > 300$ (False)

2.) $523-78=445>300$ (True)

3.) $0-78=-78>300$ (False)

4.) $-62-78=-140>300$ (False)

5.) $400-78=322>300$ (True)

6.) $379-78=301>300$ (True)

7.) $222-78=144>300$ (False)

8.) $378.6-78=300.6>300$ (True)

______________________________

$\bold{Hope~this~helps!}\\\bold{If~you~need~help~with~anything~else,~feel~free~to~ask!}\\\\\bold{~~~~~-TotallyNotTrillex}$

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