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Ch.2 - Atoms, Molecules, and Ions
All textbooksBrown 15th EditionCh.2 - Atoms, Molecules, and IonsProblem 19b
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Chapter 2, Problem 19b

The radius of an atom of gold (Au) is about 1.35 Å. b. How many gold atoms would have to be lined up to span 1.0 mm?

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Hi everyone today. I have a question asking us to calculate the number of silicon atoms needed to create a 7.0 micro meter line. If the radius of the silicon atom is 210 pick zero m. So we're gonna start off with our 7. micrometers and we're going to change that over to PICO meters. So we're gonna multiply by one. Pick zero m over One times 10 to the negative 6 μ m and then we're going to change that to adam. So we're going to multiply by one atom over 210 PICO m. So our micro meters are going to cancel out. Our PICO meters are going to cancel out and that's going to give us 33333. And if we want to change that to scientific notation, we're going to take our decimal place one 2, 34 to the right, so that equals 3.3 Times 10 to the 4th. And that is our final answer. Thank you for watching. Bye.
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Textbook Question

Millikan determined the charge on the electron by studying the static charges on oil drops falling in an electric field (Figure 2.5). A student carried out this experiment using several oil drops for her measurements and calculated the charges on the drops. She obtained the following data: Droplet Calculated Charge (C) A 1.60 * 10-19 B 3.15 * 10-19 C 4.81 * 10-19 D 6.31 * 10-19 (b) What conclusion can the student draw from these data regarding the charge of the electron?

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Textbook Question

Millikan determined the charge on the electron by studying the static charges on oil drops falling in an electric field (Figure 2.5). A student carried out this experiment using several oil drops for her measurements and calculated the charges on the drops. She obtained the following data: Droplet Calculated Charge (C) A 1.60 * 10-19 B 3.15 * 10-19 C 4.81 * 10-19 D 6.31 * 10-19 (c) What value (and to how many significant figures) should she report for the electronic charge?

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Textbook Question

The radius of an atom of gold (Au) is about 1.35 Å. a. Express this distance in nanometers (nm) and in picometers (pm).

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Textbook Question

The radius of an atom of gold (Au) is about 1.35 Å. c. If the atom is assumed to be a sphere, what is the volume in cm3 of a single Au atom?

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Textbook Question

An atom of rhodium (Rh) has a diameter of about 2.7×10−8 cm. a. What is the radius of a rhodium atom in angstroms (Å) and in meters (m)?

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Textbook Question

An atom of rhodium (Rh) has a diameter of about 2.7×10−8 cm. c. If you assume that the Rh atom is a sphere, what is the volume in m3 of a single atom?

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