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Arlecino [84]
3 years ago
15

generally speaking electrons are found in shells which we also call principal energy levels located at increasing distances from

the central nucleus the first ionization energy or ie with little sub 1 of an atom of an element describes the amount of energy required to remove the outermost electron from an atom of a_____________________.
Chemistry
1 answer:
xeze [42]3 years ago
7 0

Answer:

Gas

Explanation:

Ionization energy is the energy required to remove the most loosely held electron from a gaseous atom or ion. For the first Ionization energy, it is the energy needed to remove the most loosely bound electron from a gaseous atom

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Which type of molecule is shown below?
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Answer:

D. Cyclic alkane

Explanation: there is no double or triple bond

8 0
3 years ago
In a certain industrial process involving a heterogeneous catalyst, the volume of the catalyst (in the shape of a sphere) is 10.
mamaluj [8]

Answer:

D

Explanation:

We know that the

reaction catalyzing power of a catalyst ∝ surface area exposed by it

Given

volume V1= 10 cm^3

⇒\frac{4}{3} \pi r^3= 10

hence r= 1.545 cm

also, surface area S1= 4\pi r^2

now when the sphere is broken down into 8 smaller spheres

S2= 8×4πr'^2

now, equating V1 and V2 ( as the volume must remain same )

\frac{4}{3}\pi r^3=8\times\frac{4}{3} \pi r'^3

and solving we get

r'= r/2

therefore, S2=8\times4\pi\frac{r}{2}^2

S2=2\times4\pi r^2

S2= 2S1

hence the correct answer is

. The second run has twice the surface area.

8 0
3 years ago
This green solution of chromium(III) can further be reduced by zinc metal to a blue solution of chromium(II) ions. Write the bal
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Answer:

Half-reactions:

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Net ionic equation:

2Cr³⁺ + Zn → 2Cr²⁺ + Zn²⁺

Explanation:

The Cr³⁺ is reduced to Cr²⁺:

<h3>Cr³⁺ + 1e⁻ → Cr²⁺ -Half-reaction 1-</h3>

Zn is oxidized to Zn²⁺:

<h3>Zn → Zn²⁺ + 2e⁻ -Half-reaction 2-</h3>

Twice the reduction of Cr:

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Now this reaction + Oxidation of Zn:

2Cr³⁺ + 2e⁻ + Zn → 2Cr²⁺ + Zn²⁺ + 2e⁻

<h3>2Cr³⁺ + Zn → 2Cr²⁺ + Zn²⁺ - Net ionic equation</h3>

6 0
2 years ago
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