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2 years ago

What name is given to bonds that involve the sharing of electrons?

Chemistry

1 answer:

Nana76 [90]2 years ago

4 0

A. Covalent bonds is the answer

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II need this asap !!!!!!!

Xelga [282]

Answer:

1. B.10 mol/l

2. D.

3.A.

Explanation:

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7 0

2 years ago

Hurry I need the answer asap

olga nikolaevna [1]

Answer:

Heat or electricity in the atmasphere

Explanation:

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2 years ago

A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode c

Andre45 [30]

Answer: The standard potential of the cell is 0.77 V

Explanation:

We know that:

$E^o_{Ni^{2+}/Ni}=-0.25V\\E^o_{Cu^{+}/Cu}=0.52V$

The substance having highest positive $E^o$ reduction potential will always get reduced and will undergo reduction reaction.

The half reaction follows:

Oxidation half reaction: $Ni(s)\rightarrow Ni^{2+}(aq)+2e^-$

Reduction half reaction: $Cu^{+}(aq)+e^-\rightarrow Cu(s)$ ( × 2)

To calculate the $E^o_{cell}$ of the reaction, we use the equation:

$E^o_{cell}=E^o_{cathode}-E^o_{anode}$

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

Putting values in above equation follows:

$E^o_{cell}=0.52-(-0.25)=0.77V$

Hence, the standard potential of the cell is 0.77 V

5 0

2 years ago

Help me please!!!!!!!!!!!!!!!!!!!!!!!!!!!

Vsevolod [243]

After the first 2 min the 20 g are only 10g, (1 half-life)
after other 2 more min 5g (2 half-lives)
after other 2 more min 2.5 g (3 half-lives)
after 2 more 1.25 g (4 haf lifes)

7 0

3 years ago

Balance the equation ___ CaCO3 -> ____ CaO + ____ CO2

Degger [83]

Answer:

CaCO3 -> CaO + CO2

Explanation:

Woahhhh, did you balance it yourself just then?

3 0

2 years ago