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PIT_PIT [208]
3 years ago
9

How many neutrons does element X have if its atomic number is 26 and its mass number is 76

Chemistry
1 answer:
AlexFokin [52]3 years ago
8 0
Mass number is the total number of protons and neutrons and atomic number is the number of neutrons.

So you just subtract

Mass number - atomic number = neutrons
(Prot + neut) (Protons)

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Money management becomes more important when you are responsible for paying all your own expenses.
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What is a pattern in nature
son4ous [18]

Answer:

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A rectangular corral of widths Lx = L and Ly = 2L contains seven electrons. What is the energy of (a) the first excited state, (
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See explaination

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Check attachment for further solution to the exercise.

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3 years ago
Which of these is NOT a falsifiable hypothesis?
pashok25 [27]
D) life on earth was seeded by extraterrestrial aliens

4 0
3 years ago
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What is the ph of a 0.006 m koh solution? 1. 11.78 2. 7.00 3. 2.22 4. 8.88 5. 5.12?
Stels [109]
The concentration of OH⁻ is first converted to pOH bu using followinf formula,

                                           pOH  =  -log [OH⁻]
Putting value,
                                           pOH  =  -log (0.006)

                                           pOH  =  2.221
As we know,
                                   pH + pOH  =  14
Solving for pH,
                                   pH  =  14 - pOH
Putting value of pOH,
                                   pH  =  14 - 2.221

                                   pH  =  11.779
Result:
           Option-1
is the correct answer.
4 0
3 years ago
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