Wave speed = frequency x wavelength
therefore wavelength = wave speed / frequency
the speed of radio waves ( and all electromagnetic waves in vacuum) is 3 x 10^8 meters per second
just put the numbers in now ☺
There is no info for anyone to answer this
Answer: The Answers are: 0.31g & 0.011mol & 3.34g & 0.016mol.
Explanation: Solved in the attached picture.