Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
Related questions
Question
Problem 2-81 only

Transcribed Image Text:to one. What would be the atomic masses of naturally
77
ucleus of I
occurring hydrogen and oxygen on this scale?
dine atom
2-81. (*) A 40.0-milligrams sample of the compound
X.O., contains 22.5 milligrams of oxygen atoms. What
is the atomic mass of element X?
d oxygen,
03 grams
2-82.(*) At one time, chemists thought that the for-
mula of a binary compound was the simplest formula
possible. For example, the chemical formula of wa-
ter was thought to be HO and that of ammonia was
thought to be NH. Given that 0.832 grams of oxygen
combines with 0.104 grams of hydrogen, calculate
the atomic mass of oxygen based upon HO as the for-
mula for water. Similarly, given that 0.403 grams of
nitrogen combines with 0.0864 grams of hydrogen,
calculate the atomic mass of nitrogen based upon
gen com-
hese data
nem, 1.87
foxygen,
ines with
illustrate
mic mass
ly equal NH as the formula for ammonia.
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