The absorbance features observed in the visible spectrum for curcumin is a result of an allowed optical excitation of an electron from the π-homo to the π*-lumo.

what is the energy change for this electronic excitation based on the spectrum? (hint: energy and wavelength are related by the equation e = hc/λ.)

i think it is true since you can test the answer and can use observations to complete it.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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