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Lena [83]
3 years ago
8

PLEASE HELP!! 15 POINTS! What could the fourth quantum number of a 2s^2 electron be?

Chemistry
1 answer:
Veronika [31]3 years ago
7 0

Answer:

option D

Explanation:

first quantum number of a 2s2

n = 2

second quantum number of a 2s2

l = 0 to n-1

l = 0, 1

For s orbital

l = 0

third quantum number of a 2s2

ml = - l to +l

ml = 0

fourth quantum number of a 2s2 electron be

?½ = spin down

½ = spin up

2s2 has 2 electrons 1 spin down and 1 spin up (starts with spin down)

ms = +1/2

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Answer:

Percent yield = 89.1%

Explanation:

Based on the equation:

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<em />

To solve this quesiton we must find the moles of each reactant in order to find the limiting reactant. With the limiting reactant we can find the moles of KCl and the mass:

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8x10²⁵ molecules * (1mol / 6.022x10²³ molecules) = 133 moles

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Here, clarely, the KI is the limiting reactant

As 2 moles of KI produce 2 moles of KCl, the moles of KCl produced are 0.15 moles. The theoretical mass is:

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Answer:

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