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melomori [17]
3 years ago
8

The mass of an electron is approximately equal to 1 over 1,836 of the mass of 1. a positron 2. a proton 3. an atom of helium 4.

Chemistry
2 answers:
Ronch [10]3 years ago
7 0

Answer;

Proton

Explanation;

-Electrons are among the three sub-atomic particles, others being protons and neutrons, found in any given atom of an element. Electrons are found on the energy levels of the atom while both neutrons and protons are found in the nucleus.

-The nucleus of an atom accounts for the largest mass of an atom, while that of electrons in the energy level is negligible. Thus, the mass of an electron is said to be about 1 over 1,836 of the mass of proton.

-The weight of an electron is said to be about 1/1836 that of a hydrogen atom, that has a single electron and a single proton, therefore an electron is 1/1836th the size of a proton.

lianna [129]3 years ago
5 0
Hello!

It would be A, the proton.
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Write the balanced reaction and solubility product expression (KSP) for dissolving silver chromate: Ag2CrO4(s). Include all char
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Answer:

2Ag⁺ (aq)  + CrO₄⁻² (aq) ⇄  Ag₂CrO₄ (s) ↓

Ksp = [2s]²  . [s] → 4s³

Explanation:

Ag₂CrO₄ → 2Ag⁺  + CrO₄⁻²

Chromate silver is a ionic salt that can be dissociated. When we have a mixture of both ions, we can produce the salt which is a precipitated.

2Ag⁺ (aq)  + CrO₄⁻² (aq) ⇄  Ag₂CrO₄ (s) ↓ Ksp

That's the expression for the precipitation equilibrium.

To determine the solubility product expression, we work with the Ksp

Ag₂CrO₄ (s)  ⇄ 2Ag⁺ (aq)  + CrO₄⁻² (aq)   Ksp

                          2 s                 s

Look the stoichiometry is 1:2, between the salt and the silver.

Ksp = [2s]²  . [s] → 4s³

 

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Answer:

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How many electrons fit in each shell around an atom?

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3 years ago
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