Principles of Modern Chemistry
8th Edition
ISBN: 9781305079113
Author: David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher: Cengage Learning
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Chapter 1, Problem 19P
Interpretation Introduction
Interpretation: The relative atomic mass of B-11 isotope of boron needs to be determined.
Concept Introduction: Isotope is defined as atoms of same element with same
The
Here, %A is percentage
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The atomic masses of chlorine-35 (75.780%) and chlorine-37 (24.220%) are 34.969 amu and 36.966 amu, respectively. Calculate the average atomic mass of chlorine. The percentages in parentheses denote the relative abundances. Write the mass to correct significant figures followed by amu.
A hypothetical element exists as two isotopes: I = 85.50 amu and II = 88.70 amu. If the percent abundance of isotope I is (2.16x10^1)%, what would be the calculated atomic mass (in amu)?
Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer.
Do not round any intermediate calculations.
Note: Your answer is assumed to be reduced to the highest power possible.
Your Answer:
(1. On the second floor of Kent Laboratory a chemistry student in 111B finds
that 15.20 g of nitrogen will react with 17.37 g, 34.74 g, or 43.43 g of
oxygen to form three different compounds: (a) Calculate the ratio of the
mass of oxygen to the mass of nitrogen for each compound and (b) Explain
briefly how the numbers in part (a) support the atomic theory.
Chapter 1 Solutions
Principles of Modern Chemistry
Ch. 1 - Classify the following materials as substances or...Ch. 1 - Classify the following materials as substances or...Ch. 1 - A 17th-century chemist wrote of the “simple bodies...Ch. 1 - Since 1800, almost 200 sincere but erroneous...Ch. 1 - A sample of ascorbic acid (vitamin C) is...Ch. 1 - A sample of a compound synthesized and purified in...Ch. 1 - Nitrogen (N) and silicon (Si) form two binary...Ch. 1 - Iodine (I) and fluorine (F) form a series of...Ch. 1 - Vanadium (V) and oxygen (O) form a series of...Ch. 1 - Prob. 10P
Ch. 1 - Prob. 11PCh. 1 - Prob. 12PCh. 1 - Pure nitrogen dioxide (NO2) forms when dinitrogen...Ch. 1 - Gaseous methanol (CH3OH) reacts with oxygen (O2)...Ch. 1 - In J. J. Thompson’s experiment depicted in Figures...Ch. 1 - In the problem 15 above, what is vy , the...Ch. 1 - The natural abundances and isotopic masses of the...Ch. 1 - The natural abundances and isotopic masses of the...Ch. 1 - Prob. 19PCh. 1 - More than half of all the atoms in naturally...Ch. 1 - The isotope of plutonium used for nuclear fission...Ch. 1 - The last “missing” element from the first six...Ch. 1 - Prob. 23PCh. 1 - In 1982, the production of a single atom of...Ch. 1 - Prob. 25PCh. 1 - Prob. 26PCh. 1 - Compute the relative molecular masses of the...Ch. 1 - Prob. 28PCh. 1 - Suppose that a person counts out gold atoms at the...Ch. 1 - A gold atom has a diameter of 2.881010m . Suppose...Ch. 1 - The vitamin A molecule has the formula C20H30O ,...Ch. 1 - Arrange the following in order of increasing mass:...Ch. 1 - Mercury is traded by the “flask,” a unit that has...Ch. 1 - Gold costs $400 per troy ounce, and...Ch. 1 - Aluminum oxide (Al2O3) occurs in nature as a...Ch. 1 - Prob. 36PCh. 1 - Soft wood chips weighing 17.2 kg are placed in an...Ch. 1 - In a reproduction of the Millikan oil-drop...Ch. 1 - A rough estimate of the radius of a nucleus is...Ch. 1 - In a neutron star, gravity causes the electrons to...Ch. 1 - Prob. 41APCh. 1 - Naturally occurring rubidium (Rb) consists of two...Ch. 1 - A sample of a gaseous binary compound of boron and...
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