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elena-s [515]
3 years ago
12

An atom has 10 protons and 10 electrons. What happens to the charge if you add 1 more electron

Chemistry
1 answer:
Fed [463]3 years ago
8 0

Answer:

it becomes a negstive charge

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In a game of tug of war, team one pulls to the right with a force of 500 newtons and team two pulls to the left with a force of
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Answer:

100 n to the right

Explanation:

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2 years ago
The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is ________ V when
tia_tia [17]

Answer : The cell potential for this reaction is 0.50 V

Explanation :

The given cell reactions is:

Pb^{2+}(aq)+Zn(s)\rightarrow Zn^{2+}(aq)+Pb(s)

The half-cell reactions are:

Oxidation half reaction (anode):  Zn\rightarrow Zn^{2+}+2e^-

Reduction half reaction (cathode):  Pb^{2+}+2e^-\rightarrow Pb

First we have to calculate the cell potential for this reaction.

Using Nernest equation :

E_{cell}=E^o_{cell}-\frac{2.303RT}{nF}\log \frac{[Zn^{2+}]}{[Pb^{2+}]}

where,

F = Faraday constant = 96500 C

R = gas constant = 8.314 J/mol.K

T = room temperature = 25^oC=273+25=298K

n = number of electrons in oxidation-reduction reaction = 2

E^o_{cell} = standard electrode potential of the cell = +0.63 V

E_{cell} = cell potential for the reaction = ?

[Zn^{2+}] = 3.5 M

[Pb^{2+}] = 2.0\times 10^{-4}M

Now put all the given values in the above equation, we get:

E_{cell}=(+0.63)-\frac{2.303\times (8.314)\times (298)}{2\times 96500}\log \frac{3.5}{2.0\times 10^{-4}}

E_{cell}=0.50V

Therefore, the cell potential for this reaction is 0.50 V

5 0
3 years ago
After a covalent bond has stabilized an atom, the atom will have
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<span>A full valence electron shell.</span>
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What is the pH of solution if the concentration of [H3O+] = 0.000558?
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3.25

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pH = -log[H3O+]

-log(0.000558)=3.25

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3 years ago
Please help me thanks
Digiron [165]

Answer:

your finger becomes negatively charged

Explanation:

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3 years ago
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