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Solnce55 [7]
3 years ago
8

10. Complete the table with the correct number of electrons for each energy level.

Chemistry
1 answer:
zepelin [54]3 years ago
4 0

Answer:

4. is the correct answer

Explanation:

PLEASE MARK BRAINLIST!!!

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63Ni decays by a first-order process via the emission of a beta particle. The 63Ni isotope has a half-life of 100. years. How lo
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Answer:

151.4863 years

Explanation:

Half life, t1/2 = 100 years

Initial concentration,[A]o = 100%

Final concentration, [A] = 35% (after 65% have been decayed)

Time = ?

Half life for a first Order reaction is given as;

t1/2 = ln (2) / k

k = ln(2) / 100

k = 0.00693y-1

The integral rate law for first order reactions is given as;

ln[A] = ln[A]o − kt

kt = ln[A]o - ln[A]

t = ( ln[A]o - ln[A]) / k

t = [ln(100) - ln(35)] /0.00693

t = 1.0498 / 0.00693

t = 151.4863 years

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As the temperature increases, the kinetic energy of the molecules increases.

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a chemist uses hot hydrogen gas to convert chromium (iii) oxide to pure chromium. how many grams of hydrogen are needed to produ
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I need help with this definitions!!!
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