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...
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please help me
Transcribed Image Text:1.
Calculate the number of grams of NH,NO2 that contains 8.306 x 1022 nitrogen atoms.
How many grams of calcium acetate must have been dissolved in a solution that
contains 5.4 x 1014 total ions?
2.
3.
What is the molarity of a solution prepared by diluting 15.36 mL of 1.025 M potassium
chloride to 75.00 mL?
4.
Determine the empirical formula of a compound with 11.80 g nitrogen and 1.70 g
hydrogen. If the molecular weight of the compound is 32.05 g, what is the molecular
formula?
A cobalt (II) sulfate hydrate is 44.9% water, by mass. What is the theoretical formula of
this hydrate?
5.
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