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aev [14]
3 years ago
9

Why do other elements need to bond with one another?

Chemistry
2 answers:
dlinn [17]3 years ago
8 0

Answer:

In order for that element to gain stability

Marysya12 [62]3 years ago
7 0

Answer:

Atoms form chemical bonds to make their outer electron shells more stable. The type of chemical bond maximizes the stability of the atoms that form it.

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Choose the balanced equation for the reaction. Au3+(aq) + Cu+(aq) → Au(s) + Cu2+(aq) Au(s) + Cu2+(aq) → Au3+(aq) + Cu+(aq) Au3+(
Rasek [7]

Answer:

Au3+(aq) + 3Cu+(aq) → Au(s) + 3Cu2+(aq)

1.35 V

Explanation:

Given that the reduction potential of

Cu^2+(aq) + e- -----> Cu^+(aq) is +0.15 V

While the reduction potential of

Au3+(aq) + 3 e- -----> Au(s) is + 1.50V

It is clear that the Cu^+(aq)/Cu^2+(aq) system is the anode while Au^3+(aq)/Au(s) system is the cathode based on the reduction potentials shown above. The number of electrons transferred (n) =3

E°cell = E°cathode - E°anode

E°cell= 1.50-0.15

E°cell= 1.35 V

3 0
3 years ago
A chemist must prepare 550 mL of hydrochloric acid solution with a pH of 1.60 at 25°C .
hammer [34]

<u>Answer:</u> The volume of concentrated hydrochloric acid solution is 1.73 mL

<u>Explanation:</u>

To calculate the hydrogen ion concentration of the solution, we use the equation:

pH=-\log[H^+]

We are given:

pH = 1.60

Putting values in above equation, we get:

1.60=-\log [H^+]

[H^+]=10^{-1.60}=0.0251M

To calculate the volume of the concentrated solution, we use the equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of the concentrated HCl solution

M_2\text{ and }V_2 are the molarity and volume of diluted HCl solution

We are given:

M_1=8.0M\\V_1=?mL\\M_2=0.0251M\\V_2=550mL

Putting values in above equation, we get:

8.0\times V_1=0.0251\times 550.0\\\\V_1=\frac{0.0251\times 550}{8.0}=1.73mL

Hence, the volume of concentrated hydrochloric acid solution is 1.73 mL

6 0
3 years ago
What is the final pH of a solution when 0.1 moles of acetic acid is added to water to a final volume of 1L?
kicyunya [14]

Answer:

The pH of solution is 2.88 .

Explanation:

The reaction is :

CH_3COOH-->CH_3COO^-+H^+

We know, K_a for this reaction is = 1.76\times 10^{-5}.

Also, since volume of water is 1 L.

Therefore, molarity of solution is equal to number of moles.

Also, K_a=\dfrac{[CH_3COO^-][H^+]}{[CH_3COOH]}

Let, amount of CH_3COO^- and\ H^+ produce is x.

So,

K_a=\dfrac{[x][x]}{[0.1]}\\1.76\times 10^{-5}=\dfrac{[x][x]}{[0.1]}

x=0.0013\ mol.

We know, pH=-log{x}=-log(0.0013)=2.88

Therefore, pH of solution is 2.88 .

Hence, this is the required solution.

5 0
3 years ago
Mengapa besi lebih dahulu ditemukan daripada natrium?​
8_murik_8 [283]

Answer:

english? translate

Explanation:

please

6 0
3 years ago
What unit is used to express the average kinetic energy of a system
Elenna [48]
1.Joule 
2.Kelvin 
3.Gram 
4.Meter
3 0
4 years ago
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