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sashaice [31]
3 years ago
12

Which substance can be broken down by chemical means?

Chemistry
2 answers:
zepelin [54]3 years ago
4 0
Methanol is the substance that can be broken down by chemical means, the remaining ones are elements.
bearhunter [10]3 years ago
4 0
4. Methanol

Methanol is a compoud. The rest of the choices are elements. Elements can't be broken down, and compounds can.
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3 years ago
Which pair of elements below have +3 ionic change?<br> A. Al and Ga<br> B. Sc and Y
Vsevolod [243]
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3 years ago
An electron jumps from energy level 1 to energy level 2 by absorbing a photon of energy 8 eV. What is the most likely energy of
Mkey [24]

Answer:

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Explanation:

In atoms, the energy of each level is quantised. That is one of the reasons why an electron can not exist between energy levels. Thus, when the electron absorbs energy of 8 ev, it get excited and jumps to energy level 2 which has the current value of energy of the electron.

Thus for the electron to move back to its initial energy level, it must emit the exact energy absorbed for its excitation. Therefore, the likely energy of the photon that will be emitted is 8 ev. This would make the electron to have energy that would make it to exist on energy level 1.

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3 years ago
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