ACS Final Review Pt IV
Supplemental Instruction
Iowa State University / Leader: / Kia
Course: / CHEM 177
Instructor: / Dutton
Date: / December 7th, 2017

LAST SESSION – ALL CANDY MUST GO!

Questions from last time or questions at all?

ACS Final Questions

  1. Which of the following is a weak electrolyte in solution?

  1. HF
  2. NaF
  3. HCl
  4. KCl

  1. A 20.0 g sample of mercury (II) oxide (HgO, M=216.6) is heated strongly, causing it to decompose to metallic Hg and O2 gas. What volume of O2 gas is produced (measured at STP)?
  2. 1.03 L
  3. 2.07 L
  4. 4.14 L
  5. 14.0 L
  6. A sample of O2 gas at a given temperature and pressure has a density of 1.30 g/L. What is the density of gaseous propane (C3H8) under the same conditions?
  7. 1.30 g/L
  8. 1.79 g/L
  9. 1.96 g/L
  10. 2.60 g/L

  1. 3
  2. 6
  3. 9
  4. 11

  1. Which set of quantum numbers n, l, ml, and ms is invalid?

  1. 1, 1, 0, -1/2
  2. 2, 0, 0, +1/2
  3. 3, 1, 0, +1/2
  4. 4, 3, 2, -1/2

  1. When this equation is balanced using the smallest possible integers, what is the sum of the coefficients?

__(NH4)3PO4(aq) + __CaCl2(aq)  __Ca3(PO4)2(s) + __NH4Cl(aq)

  1. 8
  2. 9
  3. 11
  4. 12

  1. A student determined the density of a solid to be 2.90, 2.91 and 2.93 g/cm^3. If the actual density of this solid is 2.70 g/cm^3, how should the student’s results be described?
  2. High accuracy and high precision
  3. Low accuracy and high precision
  4. High accuracy and low precision
  5. Low accuracy and low precision
  6. Which 0.10 M aqueous solution exhibits the lowest electrical conductivity?

  1. HC2H3O2(aq)
  2. HNO3(aq)
  3. NH4C2H3O2(aq)
  4. Ca(NO3)2(aq)

  1. Which statement is true for this reaction?

Fe(s) + Cu+2(aq)  Cu(s) + Fe2+(aq)

  1. Cu2+ is oxidized
  2. Cu2+ gains an oxidation number
  3. Cu2+ is reduced
  4. Fe is reduced
  1. More heat is derived from cooling one gram of steam at 100 deg C to water at 50 deg C than from cooling one gram of liquid water at 100 deg C to 50 deg C because
  2. The steam is hotter than the water
  3. The steam occupies a greater volume than the water
  4. The density of water is greater than that of steam
  5. The heat of condensation is evolved
  6. Which factor affects the vapor pressure of a liquid?
  7. Temperature
  8. Atmospheric pressure
  9. Volume of the liquid
  10. Surface area of the liquid
  11. A 10.00 g sample of a compound containing only carbon, hydrogen, and oxygen forms 23.98 g CO2 and 4.91 g H2O upon complete combustion. What is the empirical formula of the compound?
  12. C2HO
  13. C3H3O
  14. C6H3O2
  15. C6H6O
  1. Which statements about the behavior of gaseous H2 molecules in a container at 1 atm and 298 K are correct?
  2. All H2 molecules are moving at the same speed
  3. The H2 molecules are colliding more frequently with the walls of the container than they would in the same container at 398 K

  1. i only
  2. ii only
  3. both i and ii
  4. Neither i nor ii

  1. In a well-insulated vessel, 50.0 g ice at 0.0 deg C is added to 350 g water at 32.0 deg C. What is the final temperature when the mixture reaches equilibrium? (The heat of fusion of ice is 334 J/g, specific heat of water is 4.184 J/g*degC)
  2. 18.0 deg C
  3. 20.6 deg C
  4. 22.0 deg C
  5. 28.0 deg C
  6. Which contains sp3-hybridized carbon atoms?
  7. Benzene, C6H6
  8. Ethane, C2H6
  9. Ethene, C2H4
  10. Ethyne, C2H2