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3 years ago

In witch of these examples does chemical energy change to electrical energy

Chemistry

1 answer:

Anuta_ua [19.1K]3 years ago

7 0

D the chemical energy in a batery changes to electrical when its used

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What does the atomic number of each atom represent?

saw5 [17]

It's the number of Protons of that atom..

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2 years ago

Consider the reaction: N2(g) 2 O2(g)N2O4(g) Write the equilibrium constant for this reaction in terms of the equilibrium constan

Valentin [98]

Answer : The equilibrium constant for this reaction is, $K=\frac{(K_b)^2}{K_a}$

Explanation :

The given main chemical reaction is:

$N_2(g)+2O_2(g)\rightarrow N_2O_4(g)$ ; $K$

The intermediate reactions are:

(1) $N_2O_4(g)\rightarrow 2NO_2(g)$ ; $K_a$

(2) $\frac{1}{2}N_2(g)+O_2(g)\rightarrow NO_2(g)$ ; $K_b$

We are reversing reaction 1 and multiplying reaction 2 by 2 and then adding both reaction, we get:

(1) $2NO_2(g)\rightarrow N_2O_4(g)$ ; $\frac{1}{K_a}$

(2) $N_2(g)+2O_2(g)\rightarrow 2NO_2(g)$ ; $(K_b)^2$

Thus, the equilibrium constant for this reaction will be:

$K=\frac{1}{K_a}\times (K_b)^2$

$K=\frac{(K_b)^2}{K_a}$

Thus, the equilibrium constant for this reaction is, $K=\frac{(K_b)^2}{K_a}$

5 0

2 years ago

Ymorist [56]

Answer:

north Carolina has been the first to have a

Explanation:

nhi has a very strong sense that the company has been working with the new company for a few weeks to girl the first time you can buy the first of the new series and it is the youngest ever seen on stilts and a few more days in plants with the high quality and a lot more of the time it is on their own than they are you and the new ones that you can do with example and a few of them in plants and other than that of a variety that help you are c and a lot more likely than the other ones yyyjjbest and boy friendly way for girls in

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2 years ago

What do all group 2 elements have in common?

Nataly_w [17]

They tend to form ionic bonds by losing electrons.

3 0

3 years ago

Read 2 more answers

One mole of carbon (12.0 g) in the form of crystalline graphite is burned at 25◦C and 1.000 atm pressure to form CO2(g). All of

iogann1982 [59]

Answer:

T₂ = 43.46 °C

Explanation:

Given that:

The heat of the formation of carbon dioxide = - 393.5 kJ/mol (Negative sign suggests heat loss)

It means that energy released when 1 mole of carbon undergoes combustion = 393.5 kJ = 393500 J

Heat gain by water = Heat lost by the reaction

Thus,

$m_{water}\times C_{water}\times \Delta T=Q$

For water:

Mass of water = 5100 g

Specific heat of water = 4.18 J/g°C

T₁ = 25 °C

T₂ = ?

Q = 393500 J

So,

$5100\times 4.18\times (T_2-25)=393500$

T₂ = 43.46 °C

6 0

3 years ago