# 15. In the Lewis structure for nitrite, what is the formal charge on the nitrogen atom?...

###### Question:

15. In the Lewis structure for nitrite, what is the formal charge on the nitrogen atom? 16. Considering the molecule AXE. (a central atom with 3 atoms attached and 1 lone pair), what is the molecular shape? A. Square planar B. Trigonal pyramid C. Trigonal planar
17. Which of the following represents a nonpolar covalent bond? A. CI-CI B. Na-CI C. H-F 18. Which of the following has only single bonds in its Lewis structure? A. NH4+ B. NO2 C. CN
19. What are the molecular shape and bond angles for the molecule bromine pentachloride, BrCls? A. Square pyramid; 90°, 180° B. Trigonal bipyramidal; 120°, 90°, 180° C. Seesaw; 1200, 900, 180° 20. What is AHnxn for the following reaction: CO2 + H2 → H2O + CO Relative bond enthalpies: C-O 358 kJ/mol H-O 463kJ/mol CEO 743 kJ/mol C (triple) 1072 kJ/mol H-H 436 kJ/mol 0-0 146 kJ/mol A. -76 kJ B. -66 kJ C. -344 kJ

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