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kakasveta [241]

3 years ago

11

What causes electric shielding?

1 answer:

ANTONII [103]3 years ago

7 0

Answer:

The shielding effect arises from superposition of the field from the outside charge distribution and the opposing charge distribution that was induced on the copper strips. This induced charge distribution, or "back-field," can be "frozen in place" by removing the wire interconnecting the strips.

Explanation:

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How to balance a chemical equations

nadezda [96]

Count the atoms of each element in the reactants and the products.
Use coefficients; place them in front of the compounds as needed.

8 0

4 years ago

What is a covalent bond?

Sphinxa [80]

It is the electron sharing.
electronegative element + electronegative element

exemple :

O₂ , H₂

hope this helps!

3 0

3 years ago

Please answer! I will mark you as brainlist!

blagie [28]

Answer:

a) no

b) no

c) yes

d) yes

Explanation:

7 0

3 years ago

Question 5 options: The cell potential for an electrochemical cell with a Zn, Zn2 half-cell and an Al, Al3 half-cell is _____ V.

Mashcka [7]

Answer:

The voltage is $E_{cell} = 0.944 \ V$

Explanation:

Generally the half reaction for Zn, Zn2 half-cell is mathematically represented as

$Zn_{(s)}$ ⇔ $Zn^{2+}_{ (aq)} + 2e^-$ (reference study academy)

and the electric potential for this is a constant value

$E_{zn } = -0.7618 \ V$

Generally the half reaction for Al, Al3 half-cell is mathematically represented as

$Al^{3+} _{(aq)} + 3e^-$ ⇔ $Al_{(s)}$

and the electric potential for this is constant value

$E_{Al } = -1.662 \ V$

Therefore the cell potential for an electrochemical cell is mathematically represented as

$E_{cell} = E_{zn } - E_{Al }$

substituting values

$E_{cell} = -0.718 - (-1.662)$

$E_{cell} = 0.944 \ V$

4 0

3 years ago

What properties are associated with metals (grade 9 science)

quester [9]

Answer:

metals can be magnetic.

Explanation:

certain types of metals are magnetic.

5 0

3 years ago