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dolphi86 [110]
3 years ago
8

How many protons, neutrons, and electrons are there in an atom of potassium-39?

Chemistry
2 answers:
yanalaym [24]3 years ago
6 0
19 - Protons (as the atomic number of proton is 19)
20 - Neutrons (39 minus the amount of protons = the neutrons)
Kamila [148]3 years ago
4 0

Answer:

19 protons, 20 neutrons and 18 electrons. i think

Explanation:

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Write a double replacement precipitation reaction A precipitate forms when aqueous solutions of nickel(II) chloride and silver(I
harkovskaia [24]

<u>Answer:</u> The balanced chemical equation is written below.

<u>Explanation:</u>

Double displacement reaction is defined as the reaction in which exchange of ions takes place.

AB+CD\rightarrow CB+AD

Precipitation reaction is defined as the reaction in which an insoluble salt is formed when two solutions are mixed containing soluble substances. The insoluble salt settles down at the bottom of the reaction mixture.

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The balanced chemical equation for the above reaction follows:

NiCl_2(aq.)+2AgNO_3(aq.)\rightarrow 2AgCl(s)+Ni(NO_3)_2(aq.)

By Stoichiometry of the reaction:

1 mole of aqueous solution of nickel (II) chloride reacts with 2 moles of aqueous solution of silver (I) nitrate to produce 2 moles of solid silver chloride and 1 moles of aqueous solution of nickel (II) nitrate

Hence, the balanced chemical equation is written above.

3 0
3 years ago
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