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BigorU [14]
3 years ago
7

Which statement best describes the process of making a solution by diluting a stock solution?

Chemistry
2 answers:
I am Lyosha [343]3 years ago
7 0

Add more solvent  to decrease the concentration.


Bas_tet [7]3 years ago
3 0
Add more solvent  to decrease the concentration.
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What is the total energy change for the following reaction: CO + H2O -> CO2 + H2?
liubo4ka [24]

1)Delta H=(Delta H of reactants)-(Delta H of products)

2)And we know CO have 3 bond CO and CO2 have 2 bond that each of them are 2 bond, please see the picture!

so lets answer it:

(3 \times 358) + (2 \times 463) - (4 \times 358) - 436 = 132

4 0
3 years ago
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What does the symbol Pt mean in a chemical equation in chemistry?
uysha [10]

Explanation:

It is mean Platinum .

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lesya692 [45]
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1)
Andrej [43]
1.<span>B) <span>the subscript
2.<span>B)<span>CO2 </span></span>.
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4 0
3 years ago
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What happens to an electron when it emits a photon
Flura [38]

Answer:

when electron emit the radiations it means it jumped to the lower energy level from higher energy level.

Explanation:

When electron jump into lower energy level from high energy level it loses the energy.

The process is called de-excitation.

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De-excitation:

When the excited electron fall back to the lower energy levels the energy is released in the form of radiations. this energy is exactly equal to the energy difference between the orbits. The characteristics bright colors are due to the these emitted radiations. These emitted radiations can be seen if they are fall in the visible region of spectrum.

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