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nordsb [41]
3 years ago
8

Write complete electron configuration for each of the

Chemistry
1 answer:
Sergio039 [100]3 years ago
3 0
A. [Ar] 3d¹ 4s²
B. Cesium [Xe] 6s1
C. [Ar] 4s² 3d¹⁰ 4p⁵
D. [He] 2s² 2p⁴

Hope this helps
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3 years ago
10. At 573K, NO2(g) decomposes forming NO and O2. The decomposition reaction is second order in NO2 with a rate constant of 1.1
leva [86]

Answer:

48.67 seconds

Explanation:

From;

1/[A] = kt + 1/[A]o

[A] = concentration at time t

t= time taken

k= rate constant

[A]o = initial concentration

Since [A] =[A]o - 0.75[A]o

[A] = 0.056 M - 0.042 M

[A] = 0.014 M

1/0.014 = (1.1t) + 1/0.056

71.4 - 17.86 = 1.1t

53.54 = 1.1t

t= 53.54/1.1

t= 48.67 seconds

Hence,it takes 48.67 seconds to decompose.

6 0
2 years ago
Which is the correct hybridization state and geometry for the carbon atom in hcn?
puteri [66]
It has covelent bonds at 180 degrees between H & N
5 0
2 years ago
Read 2 more answers
The 488 nm laser is shine on a lithium metal whose work function is 2.9 eV will you be able to see any photoelectrons? if yes wh
nalin [4]

Answer:

There will not be any ejection of photoelectrons

Explanation:

Energy of the photon= hc/λ

Where;

h= Plank's constant

c= speed of light

λ= wavelength of the incident photon

E= 6.6×10^-34 × 3 ×10^8/488 × 10^-9

E= 4.1 ×10^-19 J

Work function of the metal (Wo)= 2.9 eV × 1.6 × 10^-19 = 4.64 × 10^-19 J

There can only be ejected photoelectrons when E>Wo but in this case, E<Wo hence there will not be any ejection of photoelectrons.

3 0
3 years ago
Which of the following most completely describes an object's motion?
Gre4nikov [31]
Hello!

This is a difficultly easy question, mostly because it seems like all of the answers would be right, but if I had to choose one, I would say (D) because this option gives the most detail.

Option A only tells us how fast a car was moving
Option B only tells us the rate the water falls and how fast it is going
Option C only tells how far and not the speed or destination
Option D is correct, it tells us the speed/rate, the destination, and what is moving


Therefore, Option (D) is correct


If this helps, please mark brainliest, have a great day!!
8 0
3 years ago
Read 2 more answers
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