4. Aqueous solutions of two fictitious ionic compounds, X₂Y and ZW2, react in a double displacement reaction. What are the products? A) XW and ZY B) X₂W and ZY C) XW and ZY2 D) X₂Z and YW₂ 5. What is the molar mass of Ca3(PO4)2? A) 87.05 g/mol B) 215.20 g/mol C) 309.97 g/mol D) 430.39 g/mol 6. The average of the total mass of all an element's isotopes is called: A) the isotopic abundance B) the weighted average C) the average molar mass D) the average atomic mass 7. What is the percent composition of phosphorus in ammonium phosphate? A) 63.2% B) 36.4% C) 28.2% D) 20.8%

4. Aqueous solutions of two fictitious ionic compounds, X₂Y and ZW2, react in a double displacement reaction. What are the products? A) XW and ZY B) X₂W and ZY C) XW and ZY2 D) X₂Z and YW₂ 5. What is the molar mass of Ca3(PO4)2? A) 87.05 g/mol B) 215.20 g/mol C) 309.97 g/mol D) 430.39 g/mol 6. The average of the total mass of all an element's isotopes is called: A) the isotopic abundance B) the weighted average C) the average molar mass D) the average atomic mass 7. What is the percent composition of phosphorus in ammonium phosphate? A) 63.2% B) 36.4% C) 28.2% D) 20.8%

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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