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Artist 52 [7]
3 years ago
11

How is electrical energy generated ?

Chemistry
1 answer:
adoni [48]3 years ago
3 0
All of the above is the correct choice
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Sam prepares a solution of sodium chloride with a concentration of 8 g/dm³. If he only used 2g of sodium chloride, what volume o
adoni [48]

The volume of water he dissolved the solute is 250 cubic centimeter.

<u>Explanation</u>:

            Concentration = mass of solute in g / volume in dm^3

The concentration of a solution is defined as the ratio of mass of solute in grams to the volume of water in dm^3.

If concentration of a solution = 8 g/dm^3.

mass of solute =2 g.

Volume of a water = 2 / 8 = 0.25 dm^3. (or) 250 cubic centimeter.

4 0
3 years ago
A large crystal of potassium magnet is placed in the bottom of a beaker with cold water and left for several hours
icang [17]

Answer:

Diffusion and Dispersion.

Explanation:

The two processes that took place in the given experiment are Diffusion and Dispersion.

When a crystal of potassium magnet is added placed in the bottom of a beaker which contains cold water, after 5 minutes the particles of potassium magnet will diffuse with water through diffusion process and the colour of water turns purple.

After few hours, the colour of solution goes light purple because the tiny particles which were diffused earlier will dispersed in the water and the particles will spread and make the solution lighter in colour.

Hence, the two processes are Diffusion and Dispersion.

3 0
4 years ago
What is an ionic bond?
ira [324]

Answer

<h2>C.... C></h2>

Explanation:

6 0
3 years ago
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Cuantos electrones de valencia posee el atomo de oxigeno?
Bezzdna [24]

Answer:

El oxígeno, en concreto, tiene 2,6 electrones. Dichos electrones del oxígeno es la parte del número atómico que hace que la reacciones químicas del oxígeno sean de una manera determinada y, a su vez, distinta a la de otros elementos.

7 0
3 years ago
2. Circle the letter of each sentence that is true about numbers expressed in
ivanzaharov [21]

Answer:

I think it is b) NOT SURE

Explanation:

5 0
4 years ago
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