CEM 141 Final Exam Questions and Answers Already Passed

CEM 141 Final Exam Questions and Answers Already Passed If one carbon wants 4 bonds, how many bonding orbitals can it have? A. 1 B. 2 C. 3 D. 4 - Answers D In graphite how many carbons is each carbon attached to? A. 2 B. 3 C. 4 D. 5 - Answers B How many orbitals should "mix" to form 3 bonds? A. 2 B. 3 C. 4 D. 5 - Answers B How many different compounds can you draw from C5H12? A. 2 B. 3 C. 4 D. 5 E. 6 - Answers B What is the formal charge on H for NH4+? A. +1 B. -1 C. +2 D. -2 E. 0 - Answers E What is the formal charge on O for OH-? A. +1 B. -1 C. +2 D. -2 E. 0 - Answers B What is the formal charge on N for NH4+? A. +1 B. -1 C. +2 D. -2 E. 0 - Answers A What is the formal charge on H for OH-? A. +1 B. -1 C. +2 D. -2 E. 0 - Answers E What is the electron pair geometry for H2O? A. tetrahedral B. trigonal planar C. linear D. bent E. trigonal pyramidal - Answers A What is the shape of H2O? A. tetrahedral B. trigonal planar C. linear D. bent E. trigonal pyramidal - Answers D What is the electron pair geometry for NH3? A. tetrahedral B. trigonal planar C. linear D. bent E. trigonal pyramidal - Answers A What is the shape of NH3? A. tetrahedral B. trigonal planar C. linear D. bent E. trigonal pyramidal - Answers E What is the electron pair geometry for NH4+? A. tetrahedral B. trigonal planar C. linear D. bent E. trigonal pyramidal - Answers A What is the shape of NH4+? A. tetrahedral B. trigonal planar C. linear D. bent E. trigonal pyramidal - Answers A What is the electron pair geometry for CO2? A. tetrahedral B. trigonal planar C. linear D. bent E. trigonal pyramidal - Answers C What is the shape of CO2? A. tetrahedral B. trigonal planar C. linear D. bent E. trigonal pyramidal - Answers C Which is the most electronegative? A. F B. Cl C. Br D. I - Answers A Which is the most electronegative? A. C B. N C. O D. Ne - Answers C Is H-F... A. polar B. non-polar - Answers A Is H-O... A. polar B. non-polar - Answers A Is H-C... A. polar B. non-polar - Answers B Is C-C... A. polar B. non-polar - Answers B Is CH4... A. polar B. non-polar C. it depends - Answers B Is CH3F... A. polar B. non-polar C. it depends - Answers A Is SO3... A. polar B. non-polar C. it depends - Answers B Which has the highest boiling point? A. He B. Ne C. Ar D. Kr E. Xe - Answers E Which has the highest boiling point? A. CH4 B. NH3 C. H2O D. HF E. Ne - Answers C What effect would increasing polarity have on the strength of intermolecular forces? A. increase B. decrease C. none/same - Answers A What effect would increasing polarity have on the melting and boiling points? A. increase B. decrease C. none/same - Answers A Can CH2O (with C as the central atom) hydrogen bond? A. yes B. no - Answers B Which would have a higher booking point? A. NH3 B. H2O C. HF D. all the same - Answers B How many hydrogen bonds can H2O form? A. 1 B. 2 C. 3 D. 4 E. 6 - Answers D How many hydrogen bonds HF form? A. 1 B. 2 C. 3 D. 4 E. 6 - Answers B How many hydrogen bonds can NH3 form? A. 1 B. 2 C. 3