Electromagnetic radiation with a wavelength of 575 nm appears as yellow light to the human eye. The energy of one photon of this light is 3.46 × 10 -19 J. Thus, a laser that emits of energy in a pulse of light at this wavelength produces photons in each pulse.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

What does the mass of 0.7891 mol of ferric oxide (fe2o3)