What is the effect of acid rain on water resources?

Answer:

d.

“That is incorrect. The dynasty strengthened and unified China.”

Explanation:

give me Brainliest

Answer:

             E = k Q / [d(d+L)]

Explanation:

As the charge distribution is continuous we must use integrals to solve the problem, using the equation of the elective field

       E = k ∫ dq/ r² r^

"k" is the Coulomb constant 8.9875 10 9 N / m2 C2, "r" is the distance from the load to the calculation point, "dq" is the charge element  and "r^" is a unit ventor from the load element to the point.

Suppose the rod is along the x-axis, let's look for the charge density per unit length, which is constant

         λ = Q / L

If we derive from the length we have

        λ = dq/dx       ⇒    dq = L dx

We have the variation of the cgarge per unit length, now let's calculate the magnitude of the electric field produced by this small segment of charge

        dE = k dq / x²2

        dE = k λ dx / x²

Let us write the integral limits, the lower is the distance from the point to the nearest end of the rod "d" and the upper is this value plus the length of the rod "del" since with these limits we have all the chosen charge consider

        E = k \int\limits^{d+L}_d {\lambda/x^{2}} \, dx

We take out the constant magnitudes and perform the integral

        E = k λ (-1/x){(-1/x)}^{d+L} _{d}

Evaluating

        E = k λ [ 1/d  - 1/ (d+L)]

Using   λ = Q/L

        E = k Q/L [ 1/d  - 1/ (d+L)]

let's use a bit of arithmetic to simplify the expression

     [ 1/d  - 1/ (d+L)]   = L /[d(d+L)]

The final result is

     E = k Q / [d(d+L)]

Answer:

option C= O(g) → O+(g) + e-

Explanation:

Definition:

" The ionization energy is the energy required to remove the electron from outer most shell"

First ionization energy:

"It is the amount of energy required to remove the very first electron from valance shell"

it is represented in following equation;

X (g) → X+(g)  + e-

The physical state (g) must be written because ionization process occur  in gaseous phase. The ionization energy always measured in KJ/mol. The ionization energies are always positive because electrons are attracted towards the nucleus and  energy is always require to remove the electron and to overcome the hold of nucleus.

Periodic trend:

As we move down the group the ionization energies decreases with the increase of atomic number because atomic size increases and hold of nucleus or nucleus attraction on valance electron became weaker. that's way less energy is required to remove the electron.

As we move left to right in periodic table the ionization energy increase with increase of atomic number because atomic radius decreases and electrons are attracted towards the nucleus that's way more energy is required to remove the electron.

First ionization energy of oxygen:

O8 = 1s2 2s2 2p4      (1st ionization energy= I.E.= 1310 kJ/mol

The electron is remove from 2p subshell.

The reaction that represents the first ionization of O is c. O(g) → O⁺(g) + e⁻.

The first ionization of an atom is the removal of the most loosely bound electron of an isolated neutral gaseous atom.

Which reaction below represents the first ionization of O?

a. O(g) + e⁻ → O-(g)

NO. It is not an ionization because an electron is gained rather than lost.

b. O⁺(g) + e⁻ → O(g)

NO. It is not an ionization because an electron is gained rather than lost.

c. O(g) → O⁺(g) + e⁻

YES. It concords with the definition of first ionization.

d. O⁻(g) + e- → O²⁻(g)

NO. It is not an ionization because an electron is gained rather than lost.

e. O⁻(g) → O(g) + e⁻

NO. It does not start with a neutral atom.

The reaction that represents the first ionization of O is c. O(g) → O⁺(g) + e⁻.

Answer:

1) Se prohíbe gritar en la biblioteca.

2) Se sirve comida en la cafetería.

3) Se juega fútbol americano en el estadio.

4) Se venden libros en la librería.

5) Se hacen exámenes médicos en la clínica.

Explanation:

1) Shouting in the library is prohibited.

2) Food is served in the cafeteria.

3) American football is played in the stadium.

4) Books are sold in the bookstore.

5) Medical tests are done in the clinic.

An impersonal sentence is one that has no explicit subject and cannot be understood, that is, no element present in the (explicit) sentence performs the function of subject and is not omitted either