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Brut [27]
3 years ago
7

Calculate the number of neutrons in potassium-40.

Chemistry
2 answers:
arsen [322]3 years ago
6 0
Potassium electrons=19, protons =electrons. No of neutrons= no of mass - no of protons. 40-19=21.Ans =21 neutrons
dsp733 years ago
5 0

Answer:

21 neutrons

Explanation:

There are 21 neutrons in Pottasium-40

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The answer is A) Aluminum chloride - It does not have the prefix "tri-" since it is ionic.

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What term describes the state of matter in which the attractive forces between particles are the greatest?
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It would probably be C
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Balancing Chemical Equations Worksheet
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The balanced chemical equation of the reactions given is as follows:

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<h3>How to balance chemical equations</h3>

Balancing of chemical equations is the process of adding numerical coefficients in front of moles of reactants and products to ensure that the moles of atoms of elements of the reactants is equal to the moles of atoms of products formed.

The balanced chemical equation of the reactions given is as follows:

  • 2LiHCO3 -----> Li2CO3 + H2O + CO2
  • 2 N2 + 5 O2 -----> 2 N2O5
  • MgBr2 + KOH -----> KBr + Mg(OH)2
  • Mn + 2 CuCl -----> 2 Cu + MnCl2
  • 8 Zn + S8 -----> 8 ZnS
  • 2 NaOH + H2SO4 -----> 2 H2O + Na2SO4
  • 2 K + 2 H2O -----> 2 KOH + H2
  • C5H12 + 8 O2 -----> 6H2O + 5 CO2
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Learn more about balancing of chemical equations at: brainly.com/question/15428811

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2 years ago
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Freeze-Thaw Weathering

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Answer:

Explanation:

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= 1.368 .

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