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Assoli18 [71]
3 years ago
7

Try using Zn (solid) with Cu(NO3)2 in one cell and Cu(s) with Zn(NO3)2 solution in another cell. Note down the voltage value. Ex

plain what you are seeing for voltage value and use redox reaction to justify the process.
Chemistry
1 answer:
miskamm [114]3 years ago
5 0

Answer:

See below

Explanation:

When a strip of zinc metal is placed into a blue solution of copper(II) nitrate, a reaction immediately begins as the zinc strip begins to darken. If left in the solution for a longer period of time, the zinc will gradually decay due to oxidation to zinc ions.

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ANSWER THESE 2 QUESTIONS AND LEAVE HOW YOU DO IT BELOW
vampirchik [111]

Answer:

The first one is 102.33 g/ml

Explanation:

307 divided by 3 gets u the answer 102.33(repeated)

Hope this helps :)

5 0
3 years ago
Read 2 more answers
What do the spectral lines represent?
scZoUnD [109]

Question

What do the spectral lines represent?

Answer:

Spectral lines is defined by quantum mechanics in terms of energy levels of ions, molecules, and atoms. When electrons move from a higher level to lower one, photons are emitted and an emission line can be seen in the spectrum. As electrons jump down to the n=2 orbit, they emit photons of specific frequency (hence colour) that can be seen as emission lines in the visible part of spectrum.

Explanation:

8 0
3 years ago
What is the mass of an object that is accelerated 4 m/s2 by a force of 180 N?<br> kg<br> Asap!!!!!!!
muminat

Answer:

<h2>The answer is 45 kg</h2>

Explanation:

The mass of the object can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{180}{4}  \\

We have the final answer as

<h3>45 kg</h3>

Hope this helps you

3 0
3 years ago
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A gas with a volume of 4.0 liters at a pressure of 205 kilopascals is allowed to expand to a volume of 12.0 liters. What will th
Ksenya-84 [330]
Boyle's law p1V1=p2V2 

p2=(p1V1)/V2

p2=(205*10^3 Pa * 4*10^-3 m^3 ) / (12*10^-3 m^3)

p2= 68333 Pa
8 0
3 years ago
In terms of shape and volume, how can a gas be defined ?
Gnoma [55]

Particles in a gas are far apart compared to a solid or liquid, allowing it not to have a definitive shape or volume. This also means that gases can fill any container and be easily compressed.

4 0
3 years ago
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