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skelet666 [1.2K]
3 years ago
11

Please help me, Thank you!

Chemistry
1 answer:
Phantasy [73]3 years ago
3 0

Answer:

2

Explanation:

The atom shown in the image has 2 core electrons.

Electrons are the negatively charged particles within an atom. Therefore the total number of electrons surrounding the nucleus in the given specie is 7.

 So;

   We have 2 core electrons

   And 5 valence electrons

The core electrons are the inner orbital electrons.

The valence electrons are the outermost electrons.

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It is important to understand that while the absorbance value is related to the amount of light absorbed by a sample, it is not
Trava [24]

When 100 photons of light pass through a sample and 64 photons are detected after the passage of light, the number of photons transmitted through the sample is 64.

This is based on the methods of calculating the absorbance of light, which is depicted as the higher the amount of light transmission, the lower the amount of light absorbed.

Thus, when 64 photons of light in 100 photons are detected, 64 photons are transmitted, and therefore, the number of photons absorbed is 36.

Hence, hypothetically, if 100 photons of light are transmitted, 0 photons of light will be absorbed.

Therefore, in this case, it is concluded that the correct answer is 64 photos.

Learn more here: brainly.com/question/20678715

5 0
2 years ago
Assuming the substance is one of those listed in the table presented in this lesson, what is the identity of the substance?
zepelin [54]

The identity of the substance is Iron.

<h3>Properties of Iron</h3><h3>Chemical properties</h3>
  • The element iron has the atomic number 26 and the symbol Fe
  • Electronic configuration of Fe is [AR] 3d6 4s2
  • The atomic weight of Iron is 55.847
  • The element iron belong to the group VIII of the periodic table
  • It is the fourth most prevalent element in the crust of the world
  • It is a highly reactive element as it gets rusted readily in the moisture of air
<h3>Physical properties</h3>
  • It is a heavy metal in the first transition series  
  • The color of iron is silvery grey
  • High malleability and ductility
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brainly.com/question/2140373

#SPJ1

8 0
1 year ago
Read 2 more answers
If 5,800 j of energy are applied to a 15.2 kg piece of lead, by how much does the temp change if the specific heat of lead is 0.
scoray [572]

Answer:

The answer will be 2.98K

Explanation:

Using the formula:

Q = mc∆T

Q= 5,800 (heat in joules)

m= convert 15.2kg to g which is 15200g (mass in grams)

c= 0.128 J/g °c (Specific heat capacity)

∆T=  what we need to find (temperature change)

5800J = 15200g x 0.128 x ∆T

= 2.98K  

7 0
3 years ago
Is water wet? or is it just an experience?
polet [3.4K]
WATER is wet to make it a more marketable commodity
7 0
3 years ago
Three players (A, B and C) shoot three arrows at a target
UkoKoshka [18]

Answer:

Player B

Explanation:

I just did it and I got it right :)

6 0
3 years ago
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