A sample of hydrogen gas occupies a volume of 4.1 Liters
at 105 kPa of pressure. What pressure, in kPa, would the
gas exert if the volume was decreased to 2.5 Liters?

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.