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Brums [2.3K]
3 years ago
12

What are the electronic configurations for the first twenty elements

Chemistry
1 answer:
Lerok [7]3 years ago
5 0
H   1s¹
He 1s²
Li    [He] 2s¹
Be  [He] 2s²
B    [He]2s²2p¹
C    [He]2s¹2p²
N   [He] 2s²2p³
O   [He]2s²2p⁴
F     [He]2s²2p⁵
Ne    [He]2s2p⁶
Na   [Ne]3s¹
Mg    [Ne]3s²
Al    [Ne]3s²3p¹
Si    [Ne]3s²3p²
P    [Ne]3s²3p³
S    [Ne]3s²3p⁴
Cl    [Ne]3s²3p⁵
Ar    [Ne]3s²3p⁶
K    [Ar]4s¹
Ca  [Ar]4s²
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Which reaction has the highest atom economy for the production of C02?​
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The highest atom economy

2CO + O₂ ⇒ 2CO₂

<h3>Further explanation</h3>

Given

The reaction for the production of CO₂

Required

The highest atom economy

Solution

In reactions, there are sometimes unwanted products that can be said to be a by-product or a waste product. Meanwhile, the desired product can be said to be a useful product, which can be shown as the atom economy

of the reaction

the higher the atomic economy value of a reaction, the smaller the waste/ byproducts produced, so that less energy is wasted

The general formula:

Atom economy = (mass of useful product : mass of all reactants/products) x 100

<em>or </em>

Atom economy = (total formula masses of useful product : total formula masses of all reactants/products) x 100

So a reaction that only produces one product will have the highest atomic value, namely the reaction in option C

4 0
3 years ago
Given a 240.0 g sample of sulfur trioxide (MM = 80.1 g/mol),
labwork [276]

Answer:

2 mol of SO3 produces 1 mol O2

3 mol SO3 produces 3/2 mol of O2

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Explanation:

8 0
3 years ago
A liquid-phase isomerization is carried out in a 1000-gal CSTR that has a single impeller located halfway down the reactor. The
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Answer:

The conversion achieved for the first CSTR impeller is 0.382

Discrepancy = 0.188

Explanation:

The impeller divides the CSTR into 2 equal reactors of volume 500gal

Using V = FaoX/ (-ra)

500gal = Fao×Xa/[(KCao^2( 1 -X1)^2]

500gal = CaoVoX1/ KCao^2(1-X1)

500gal= 500gal × X1'/(1 - X1)^2

(1 -X1)^2 = X1

X1^2 - 3X1 + 1 = 0

X1= 0.382

Conversion achieved in the first CSTR is 0.382

Actual measured CSTR = 57% =57/100=0.57

Discrepancy in the conversions= 0.57 -0.383 =0.188

8 0
3 years ago
How do scientists use radioactive decay to date fossils
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The clearer answer is they measure the remaining carbon, and the less that there is the older the fossil is.
7 0
3 years ago
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