Answer to Question #70307 in General Chemistry for Abbey

Question

Infrared radiation has wavelengths ranging
from about 800 nm to 1 mm. What is the
frequency of radiation of wavelength 840 nm?

Answer 1

c = 299 792 458 m/s
wavelength = 840nm = 840 * 10^-9 m
frequency = c/wavelength
frequency = 299 792 458/ 840 * 10^-9 = 356 895 783 333 333,3 Hz = 356.9 THz