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Part A)    Write the chemical formula for cobalt (II) selenate hexahydrate     Part B)       The oxidation state of oxygen in sodium peroxide, Na2O2, is:                     (a)   0                    (b)  -1             (c)   +1            (d)  -2                 (e)   +2   Part C)      The oxidation state of chromium in CrAsO4 is:                     (a)   0                    (b)  +1                (c)   +2             (d)  +3                    (e)   -3

Part A)    Write the chemical formula for cobalt (II) selenate hexahydrate     Part B)       The oxidation state of oxygen in sodium peroxide, Na2O2, is:                     (a)   0                    (b)  -1             (c)   +1            (d)  -2                 (e)   +2   Part C)      The oxidation state of chromium in CrAsO4 is:                     (a)   0                    (b)  +1                (c)   +2             (d)  +3                    (e)   -3

Chemistry
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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Part A)    Write the chemical formula for cobalt (II) selenate hexahydrate

 

 

Part B)       The oxidation state of oxygen in sodium peroxide, Na2O2, is:

                    (a)   0                    (b)  -1             (c)   +1            (d)  -2                 (e)   +2

 

Part C)      The oxidation state of chromium in CrAsO4 is:

                    (a)   0                    (b)  +1                (c)   +2             (d)  +3                    (e)   -3

 

Part D)       How many moles of ions per liter are there in a 26.00% by mass aqueous sodium chloride solution (density of solution is 1.194 g/mL at 25oC)?

(a)   0.4801 M                        (b)   8.90 M          (c)   0.2434 M             (d)   10.6 M            
(e)   None of those, if so what is your answer?

  

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