Draw the products formed when pentanoic anhydride [(CH3CH2CH2CH2CO)2O] is treated with the following reagent. Differentiate products by greater or lesser molecular mass. (CH3CH2)2NH (excess)

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.