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Gwar [14]
3 years ago
11

How many valence electrons are in each atom? a. potassium b. carbon c. magnesium d. oxygen

Chemistry
1 answer:
Alona [7]3 years ago
8 0
A. 1 valence electron
b. 4 valence electrons
c. 2 valence electrons
d. 6 valence electrons
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A particular first-order reaction has a rate constant of 1.35 × 102 s-1 at 25.0°C. What is the magnitude of k at 95.0°C if Ea =
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Answer:

k ≈ 9,56x10³ s⁻¹

Explanation:

It is possible to solve this question using Arrhenius formula:

ln\frac{k2}{k1} = \frac{-Ea}{R} (\frac{1}{T2} -\frac{1}{T1} )

Where:

k1: 1,35x10² s⁻¹

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k2 : ???

T2: 95,0°C+ 273,15K = 368,15K

Solving:

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{k2} = 9,53x10^3 s^{-1}

<em>k ≈ 9,56x10³ s⁻¹</em>

I hope it helps!

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If chlorine gas is bubbles through an aqueous solution of sodium iodide,the result is elemental iodine and aqueous sodium chlori
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( Source : Quora )

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Download pdf
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3 years ago
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