Consider the following three statements: i. For any electromagnetic radiation, the product of the wavelength and the frequency is a constant. ii. If a source of light has a wavelength of 3.0 Å, its frequency is 1.0 x 1018 Hz. ilI. The speed of ultraviolet light is greater than the speed of microwave radiation. Which of these three statements is or are true? O Only one statement is true O Statements (i) and (ii) are true O Statements (i) and (iii) are true O Statements (ii) and (I1) are true O All three statements are true

Please answer both parts with small explanation or leave for someone else

W ilat is ne nequency OF VisIble light with a wavelength of 500 nm? 2. For each of the following, describe the relationship as directly or inversely proportional: a) wavelength vs. frequency b) wavelength vs. energy c) frequency vs. energy 3. When sodium is excited in a flame, two ultraviolet spectral lines at A = 372.1 nm and A respectively are emitted. Which wavelength represents photons with %3D

Please answer d, e, f  thanks

Microwave ovens heat food by creating microwave electromagnetic radiation that is absorbed by water molecules in the food. Any material that does not have water in it will not absorb the radiation and will not get hot. Metals reflect the microwaves from their surfaces and disrupt the operation of the oven. Some Australians heat water in microwave ovens to make tea. What is the minimum number of microwave photons with a wavelength of 3.48 mm that will have to be absorbed by a 111.00 gram sample of water to heat it from 25°C to 100°C? (It requires about 315 joules of energy to heat 1 gram of water 75°C)   Hint: Calculate the energy of one photon E = h c / lambda ; Divide it into the total amount of energy required.

The quantum number that characterizes the electron in the lowest energy level of the hydrogen atom is n =1, l=0, m=0; and s= +½. Electron excitation can promote to higher energy levels. Which set of quantum numbers is forbidden for excited electrons? a. n = 1, l = 0, m = -1, s = +1/2 b. n = 3, l = 1, m = 0, s = +1/2 c. n = 3, l=2, m = -2, s=-1/2 d. n = 7, l = 4, m = -2, s = +1/2

Radio wave radiation has wavelengths from 10 to 1000 m, whereas the wavelength region for ultraviolet radiation is 1.0x108 to 1.0x10-7 m. We can say that: 1. The frequency of radio wave radiation is v ultraviolet radiation. 2. The speed of radio wave radiation is ultraviolet radiation.

1. A mercury atom emits light at many wavelengths, two of which are at (1) 404.7 nm and (2) 435.8 nm . Both of these transitions are to the same final state. Determine the energy of each emitted wavelength (in J).