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ruslelena [56]
3 years ago
12

Which soil layer contains the most

Chemistry
2 answers:
sattari [20]3 years ago
4 0

Soil is usually layered. The uppermost layer is called topsoil and this layer contains the most humus, plant roots, and living creatures. The middle layer is called subsoil.

Aleks [24]3 years ago
4 0

Answer: Mantle

Explanation:

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You observe that the hair on your head stands up when a charged balloon is brought near without touching your head. Based on thi
Andrej [43]

Answer:

yes it can be attracted without touching The electric force is a non-contact force. Any charged object can exert this force upon other objects - both charged and uncharged objects.

Explanation:

7 0
3 years ago
AZX symbol of a cation with 13 neutrons
Svet_ta [14]

The AZX symbol of  a cation with 13 neutrons is A = 24 , Z = 11 and X = Na+

<h3>What is AZX?</h3>

AZX is a symbol which stands for;

  • A is the mass number
  • Z is the atomic number or the number of protons
  • X is the chemical symbol of the element

Note, cations are positively-charged ions having more protons than electrons due to loss of one or more electrons.

Sodium ion represented as Na+ is a cation which lost one electron. It has 13 neutrons and 11 protons.

But the mass number of an element, A is the sum of protons and neutrons of the element.

Thus, for Na+

A = 13 + 11 = 24

Z = 11

X = Na+

Therefore, the AZX symbol of  a cation with 13 neutrons is A = 24 , Z = 11 and X = Na+

Learn more about sodium ion here:

brainly.com/question/1933786

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8 0
2 years ago
What is the minimum (non-zero) thickness of a benzene (n = 1.501) thin film that will result in constructive interference when v
ad-work [718]

Explanation:

At each reflecting surface (benzene and glass) there will be 180 degree phase change.

Now, for constructive interference the optical path in benzene is \lambda.

Formula to calculate thickness of a benzene thin film is as follows.

     Optical path length through benzene (\lambda) = 2 \times n \times d

Hence, substituting the given values into the above formula as follows.

    Optical path length through benzene = 2 \times n \times d

                   d = \frac{\text{Optical path length through benzene}}{2 \times n}

                       = \frac{\lambda}{2 \times n}  

                       = \frac{615 \times 10^{-9}}{2 \times 1.501}   (as 1 nm = 10^{-9}m

                       = 204.9 m          

Thus, we can conclude that minimum thickness of benzene is 204.9 m.

4 0
3 years ago
1. How many isotopes does hydrogen have?
natima [27]

Answer:

There are 3 isotopes of the element hydrogen.

Explanation:

hydrogen, deuterium, and tritium.

6 0
3 years ago
Read 2 more answers
In a reaction involving I− ,  I 2 and starch, you observe the rate at which a blue color appears over time. Which statement is t
jasenka [17]

Answer:

You are observing the appearance of products over time.

Explanation:

did the test

3 0
3 years ago
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