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larisa [96]
3 years ago
7

A chemist has synthesized two new dyes based on the molecular structure of plant-based dyes. The lowest energy absorption line f

or one dye is light in the visible region at 530 nm, the lowest energy absorption line for the other dye is light in the visible region at 645 nm. Based on this evidence, which molecule has the higher HOMO - LUMO gap?1. The dye that absorbs at 530 nm.2. There is not enough information given to predict.3. The gap is the same, because they both absorb in visible region.4. The dye that absorbs at 645 nm.
Chemistry
1 answer:
Nimfa-mama [501]3 years ago
8 0

Answer:

1. The dye that absorbs at 530 nm.

Explanation:

The dye will absorb light to promote the transition of an electron from the HOMO to the LUMO orbital.

The higher the gap, the higher the energy of transition. The energy can be calculated by E = hc/λ, in which h and c are constants and λ is the wavelength.

The equation shows that the higher the energy, the higher the gap and the lower the wavelength.

Therefore, the dye with absorption at 530 nm has the higher HOMO-LUMO gap.

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In this way, underground rivers, streams, runoff, rain, and underground water pooled in caves have all carved out gaps and caverns in the weak limestone bedrock.

3 0
3 years ago
An organic fertiliser in which plants are ploughed back into the soil​
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Answer:

It was called MANURE

Explanation:

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7 0
3 years ago
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Answer:

E°(Ag⁺/Fe°) = 0.836 volt

Explanation:

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_________________________________

Fe°(s) + 3Ag⁺(aq) => Fe⁺³(aq) + 3Ag°(s) ...    

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4 0
3 years ago
Write 0.000443200 to two significant figures
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0.00044


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6 0
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makkiz [27]
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7 0
3 years ago
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