Describe how electrons move up and down energy levels (from ground state to an excited state, and vice versa).

1 answer:

3 0

When elements are heated/energized their electrons then absorb the energy and transition into a higher energy level known as the excited state. Then electrons then eventually fall back to their lowest state of energy or their ground state.

hope this helps :)p

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Ochem question?

insens350 [35]

Answer: 4.) CH3O is the answer, which stands for Methoxide.

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3 years ago

4NH3 (g)+502(g)->6H20g)+4NOg) What is the enthalpy change for this reaction?

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Enthalpy is energy of bonds broken - energy of bonds formed. Here, the NH3 and O2 are broken and H2O and NO are formed. So the energy to break the NH3 bonds is 3 times the amount of energy it takes to break a N-H single bond (because there are three of them in a NH3 molecule) and then multiplied by 4 because there are four particles.

So the energy of the bonds broken is 12x the energy to break a N-H single bond plus 5x the amount of energy to break an O—O double bond (you don’t multiply this by anything because in each O2 molecule there is only one bond).

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To know what type of bond it is, draw the Lewis structure.

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