Results for "Hydrogen"

Hydrogen Halides

Part II. Multiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 52. A mixture of He and Ne at a total pressure of 0.95 atm is found to contain 0.32 mol of He and 0.56 mol of Ne. The partial pressure of Ne is __________ atm. A) 0.60 B) 1.5 C) 1.0 D) 0.35 53. Of the following gases, _____________ will have the greatest rate of effusion at a given temperature. A) NH3 B) CH4 C) Ar D) HCl 54. Which noble gas is expected to show the largest deviations from the ideal gas behavior? A) helium B) neon C) argon D) krypton 55. Together, liquids and solids constitute _______ phases of matter. A) the compressible B) the fluid C) the condensed D) the disordered 56. What is the predominant intermolecular force in liquid CBr4? A) dispersion B) dipole-dipole C) ion-dipole D) hydrogen bonds 57. Of the following substances, ____________ has the highest boiling point. A) H2O B) CO2 C) CH4 D) Kr 58. Of the following substances, ____________ has the lowest boiling point. A) Kr B) Ar C) Ne D) Xe 59. What is the predominant intermolecular force in liquid HBr? A) dispersion B) dipole-dipole C) ion-dipole D) hydrogen bonds 60. The total pressure of a mixture of O2 and N2 is 730 torr. The partial pressure of N2 is 0.78 atm. The partial pressure of O2 is A) 0.18 atm B) 0.22 atm C) 0.26 atm D) 0.78 atm

Part II. Multiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 14. Which of the following compounds would you expect to be ionic? A) SF6 B) H2O C) H2O2 D) CaO 15. Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N2 (g) + 3H2 (g) à 2NH3 (g) A 9.3-g sample of H2 requires ____________ g of N2 for a complete reaction. A) 43 B) 1.3 x 102 C) 3.9 x 102 D) 4.6 16. What is the frequency of light (s-1) that has a wavelength of 1.23 x 10-6 cm? A) 3.69 B) 2.44 x 1016 C) 4.10 x 10-17 D) 9.62 x 1012 17. Which sketch represents an orbital with the quantum numbers n = 3, l = 1, ml = 0? A) B) C) D) 18. What color of visible light has the longest wavelength? A) blue B) violet C) red D) yellow 19. According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the __________ of an electron. A) mass B) color C) momentum D) shape 20. The wavelength of a photon that has an energy of 5.25 x 10-19 J is ___________ m. A) 3.79 x 10-7 B) 2.64 x 106 C) 2.38 x 1023 D) 3.79 x 107 21. There are ___________ orbitals in the second shell. A) 2 B) 4 C) 9 D) 18

Hydrogen bonds (strongest)

Part I. (45 points). In the spaces next to the chemical symbol write the name of the element, the condensed electron configuration, and indicate if the element is a metal, nonmetal or metalloid. Name Condensed electron configuration Metal/nonmetal/metalloid A) Cl _________ _______________________ _________________________ B) B _________ _______________________ _________________________ C) K _________ _______________________ _________________________ D) Zn _________ _______________________ _________________________ E) P _________ _______________________ _________________________ Part II. Multiple choice (3 points each = 180 points total). Please circle your answer. There is only one correct answer to each question. 1. The mass % of C in methane (CH4) is __________. A) 25.13 B) 133.6 C) 74.87 D) 92.26 2. Which of the following does not occur as diatomic molecules in its elemental form? A) helium B) nitrogen C) oxygen D) hydrogen 3. The molecular weight of ethanol (C2H5OH) is ____________ amu. A) 34 B) 41 C) 30 D) 46 4. A cube of salt measures 0.550 cm on each side. What is its volume in mm3? A) 166 mm3 B) 5.50 mm3 C) 0.166 mm3 D) 550 mm3

Reduction of Alkenes: Catalytic hydrogenation

12-15, Hydrogen sulfide production, decarboxylation, phenylalanine deamination, and urease test

Hydrogen Bonding Rules

Catalytic Hydrogenation

10. Forces between molecules - Hydrogen Bond

Water Properties and Hydrogen Bonding

Intermolecular bonding - Hydrogen bonding

Hydrogen/Carbon Chemical Shift Ranges

Reactions in organic chem

11. Atomic emissions Spectrum of Hydrogen

To monitor the rate of production of oxygen from hydrogen peroxide using manganese dioxide as a catalyst

topic 1.1. structure of water and hydrogen bonding

Unit 3 Part 1 - Properties of Substances & Mixtures

Structure of Water and Hydrogen Bonding

Hydrogen Bonds and Water Properties