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The formula of a compound of lead (Pb) and sulfur (S) was determined using the method in this module. A sample of Pb was weighed into a crucible and covered with finely powdered S.  The crucible was covered and heated to allow the Pb and S to react.  Additional heating burned off all unreacted S.  The crucible was then cooled and weighed.  The following data were collected. (Mole mass of Pb I 207.2 g/mol, S is 32 g/mol) mass of crucible and cover, g                                                   29.889 g mass of crucible, cover and Pb, g                                            34.025 g mass of crucible, cover, and compound formed, g             34.666 g  Calculate the mass of Pb reacted.     Calculate the mass of compound that formed.     Calculate the mass of S reacted.     Calculate the number of moles of Pb and S reacted.     Write the empirical formula of the compound.

The formula of a compound of lead (Pb) and sulfur (S) was determined using the method in this module. A sample of Pb was weighed into a crucible and covered with finely powdered S.  The crucible was covered and heated to allow the Pb and S to react.  Additional heating burned off all unreacted S.  The crucible was then cooled and weighed.  The following data were collected. (Mole mass of Pb I 207.2 g/mol, S is 32 g/mol) mass of crucible and cover, g                                                   29.889 g mass of crucible, cover and Pb, g                                            34.025 g mass of crucible, cover, and compound formed, g             34.666 g  Calculate the mass of Pb reacted.     Calculate the mass of compound that formed.     Calculate the mass of S reacted.     Calculate the number of moles of Pb and S reacted.     Write the empirical formula of the compound.

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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The formula of a compound of lead (Pb) and sulfur (S) was determined using the method in this module. A sample of Pb was weighed into a crucible and covered with finely powdered S.  The crucible was covered and heated to allow the Pb and S to react.  Additional heating burned off all unreacted S.  The crucible was then cooled and weighed.  The following data were collected. (Mole mass of Pb I 207.2 g/mol, S is 32 g/mol)

mass of crucible and cover, g                                                   29.889 g

mass of crucible, cover and Pb, g                                            34.025 g

mass of crucible, cover, and compound formed, g             34.666 g

  1.  Calculate the mass of Pb reacted.

 

 

  1. Calculate the mass of compound that formed.

 

 

  1. Calculate the mass of S reacted.

 

 

  1. Calculate the number of moles of Pb and S reacted.

 

 

  1. Write the empirical formula of the compound.

 

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