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julsineya [31]
2 years ago
15

If an atom has 4 protons, 5 neutrons, and 4 electrons, what would its atomic mass be?

Chemistry
1 answer:
Rina8888 [55]2 years ago
8 0

Answer:

4

Explanation:

If I remember correctly, the atomic # will always be the same as the # of electrons

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Let’s say that the initial concentration of SrSo4 was 1. ( or we have 1 mole of this reagent).

When The reaction occurs part of SrSo4is dissociated. And we get X mole Sr(2+) and So4(2-).
Ksp=[Sr(2+)]*[SO4(2-)]
X^2=3.2*10^-7
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Nutka1998 [239]

Answer:

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Explanation:

Data obtained from the question include:

Mole of propanone = 0.20 mole

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Thus, 0.20 mole of propanone contain

1.2×10²³ atoms.

6 0
3 years ago
in rutherford's gold foil experiment a very small number of alpha particles were deflected. what about the structure of the atom
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3 years ago
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Answer:

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Explanation:

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Explanation:

7 0
3 years ago
Read 2 more answers
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