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Ch.6 - Electronic Structure of Atoms
Chapter 6, Problem 85

Is the observation that UV-B radiation is a more important cause of sunburn in humans than UV-A radiation consistent with the answer to part (c)?

Verified step by step guidance
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Step 1: Understand the difference between UV-A and UV-B radiation. UV-A has a longer wavelength (320-400 nm) and is less energetic, while UV-B has a shorter wavelength (290-320 nm) and is more energetic.
Step 2: Recall that the energy of electromagnetic radiation is inversely proportional to its wavelength. This means that UV-B, with its shorter wavelength, has higher energy compared to UV-A.
Step 3: Consider the biological effects of UV radiation. Higher energy radiation, like UV-B, can cause more damage to biological tissues, leading to sunburn.
Step 4: Review the answer to part (c) to see if it discusses the energy or biological impact of UV-A and UV-B radiation, which would help determine if the observation is consistent.
Step 5: Compare the information from part (c) with the known effects of UV-A and UV-B to assess if the observation about UV-B being a more important cause of sunburn aligns with the explanation provided.
Related Practice
Textbook Question

If a sample of calcium chloride is introduced into a nonluminous flame, the color of the flame turns to orange ('flame test'). The light is emitted because calcium atoms become excited; their return to the ground state results in light emission. (b) What is the energy of 1.00 mol of these photons (a mole of photons is called an Einstein)?

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Textbook Question

Certain elements emit light of a specific wavelength when they are burned or heated in a non-luminous flame. Historically, chemists used such emission wavelengths to determine whether specific elements were present in a sample. Some characteristic wavelengths for a few of the elements are given in the following table: Ag 328.1 nm Fe 372.0 nm Au 267.6 nm K 404.7 nm Ba 455.4 nm Mg 285.2 nm Ca 422.7 nm Na 589.6 nm Cu 324.8 nm Ni 341.5 nm (c) When burned, a sample of an unknown substance is found to emit light of frequency 6.58 * 1014 s-1. Which of these elements is probably in the sample?

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Textbook Question

In January 2006, the New Horizons space probe was launched from Earth with the mission to perform a flyby study of Pluto. The arrival at the dwarf planet was estimated to happen after nine years, in 2015. The distance between Earth and Pluto varies depending on the location of the planets in their orbits, but at their closest, the distance is 4.2 billion kilometers (2.6 billion miles). Calculate the minimum amount of time it takes for a transmitted signal from Pluto to reach the Earth.

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Textbook Question

The watt is the derived SI unit of power, the measure of energy per unit time: 1 W = 1 J>s. A semiconductor laser in a DVD player has an output wavelength of 650 nm and a power level of 5.0 mW. How many photons strike the DVD surface during the playing of a DVD 90 minutes in length?

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Textbook Question

In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of radiation hitting a metal surface. She obtains the following plot. The point labeled 'n0' corresponds to light with a wavelength of 542 nm. (a) What is the value of n0 in s - 1?

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Textbook Question

Consider a transition in which the electron of a hydrogen atom is excited from n = 1 to n = . (a) What is the end result of this transition?

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