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3. An unknown element Z has a molar mass of 200g/mol. How many moles of element Z are in a sample weighing 25g? a) 8 moles c) 5000 moles b) 0.125 moles d) 200 moles 4. Which of the following is an empirical formula? a) C12H1402 c) C₂H₂O2 b) C15H2005 d) C8H403

3. An unknown element Z has a molar mass of 200g/mol. How many moles of element Z are in a sample weighing 25g? a) 8 moles c) 5000 moles b) 0.125 moles d) 200 moles 4. Which of the following is an empirical formula? a) C12H1402 c) C₂H₂O2 b) C15H2005 d) C8H403

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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3. An unknown element Z has a molar mass of 200g/mol. How many moles of element Z are in a sample weighing 25g? a) 8 moles c) 5000 moles b) 0.125 moles d) 200 moles 4. Which of the following is an empirical formula? a) C12H1402 c) C₂H₂O2 b) C15H20O5 d) C8H4O3
Transcribed Image Text:3. An unknown element Z has a molar mass of 200g/mol. How many moles of element Z are in a sample weighing 25g? a) 8 moles c) 5000 moles b) 0.125 moles d) 200 moles 4. Which of the following is an empirical formula? a) C12H1402 c) C₂H₂O2 b) C15H20O5 d) C8H4O3
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