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3rd Tests

  • Chapters 6.10 - 10.3
  • Nonprogrammable calculator
  • Pencil
  • Eraser
  • If you arrive after 7pm, you have taken your drop grade.

Review Day

  • Clicker 1
  • Audio 0:04:25.997870
  • Which of the following signs on q and w represent a system that is doing work on the surroundings, as well as gaining heat from the surroundings?
    • A) q=+, w=-
    • B) q = -, w = +
    • C) q = +, w = +
    • D) q = -, w = -
    • E) None of these represent the system referenced

  • Audio 0:06:45.527461

clicker 2

  • Which of the following signs on q and w represent a system that the surroundings are doing work on, as well as gaining heat from the surroundings?
    • A) q = +, w = -
    • B) q = -, w = +
    • C) q = +, w = +
    • D) q = -, w = -
    • E) None of these represent the system referenced

Clicker 3

  • How many of the following molecules are polar?
  • PCl5 COS XeO3 SeBr2
    • A) 2
    • B) 0
    • C) 1
    • D) 3
    • E) 4

Clicker 4

  • Audio 0:14:22.599679
  • When an aqueous solution of manganese (II) nitrate is combined with an aqueous solution of ammonium sulfide, what should precipitate out?
    • A) MnS
    • B) Mn(SO3)2
    • C) Mn(SO4)2
    • D) Mn2SO3
    • E) Mn2SO4

Clicker 5

  • Audio 0:17:34.714245
  • Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of K2S and Fe(NO3)2 are mixed.
    • A) K+(aq) + NO3 - (aq) → KNO3(s)
    • B) Fe2+(aq) + S2-(aq) + 2 K+(aq) + 2 NO3 - (aq) → FeS(s) + 2 K+(aq) + 2 NO3 - (aq)
    • C) Fe2+(aq) + S2-(aq) + 2 K+(aq) + 2 NO3 - (aq) → Fe2+(aq) + S2-(aq) + 2 KNO3(s)
    • D) Fe2+(aq) + S2-(aq) → FeS(s)
    • E) No reaction occurs.

Clicker 6

  • Audio 0:20:52.685314
  • Determine the reducing agent in the following reaction. 2 Li(s) + Fe(C2H3O2)2(aq) → 2 LiC2H3O2(aq) + Fe(s)
    • A) O
    • B) H
    • C) C
    • D) Fe
    • E) Li

Clicker 7

  • Audio 0:26:39.117323
  • Draw the appropriate molecular orbital diagram and determine which of the following are paramagnetic.
    • A) B2^2+
    • B) B2^2-
    • C) N2^2+
    • D) C2^2-
    • E) B2

Clicker 8

  • Audio 0:30:33.281519
  • How many moles of nitrogen are formed when 58.6 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.11 g/mol
    • 4KNO3(s) -> 2K2O(s) + 2N2(g) + 5O2(g)
    • A) 0.290 mol N2
    • B) 0.580 mol N2
    • C) 18.5 mol N2
    • D) 0.724 mol N2
    • E) 1.73 mol N2

Clicker 9

  • Audio 0:34:13.545160
  • According to the following reaction, how many grams of sulfur are formed when 37.4 g of water are formed? (S: 32.07, H: 1.0079, O: 15.999)
    • 2H2S(g) + SO2(g) -> 3 S(s) + 2H2O
    • A) 99.8 g S
    • B) 66.6 g S
    • C) 56.1 g S
    • D) 44.4 g S
    • E) 14.0 g S

Clicker 10

  • Audio 0:37:15.066241
  • Determine the theoretical yield of HCl if 60.0 g of BCl3 and 37.5 g of H2O are reacted according to the following balanced reaction. (molar mass of BCl3 = 117.16 g/mol, B: 10.81, Cl:35.45, O:15.999, H:1.0079)
    • BCl3(g) + 3 H2O(l) → H3BO3(s) + 3 HCl(g)
    • A) 75.9 g HCl
    • B) 132 g HCl
    • C) 187 g HCl
    • D) 56.0 g HCl
    • E) 25.3 g HCl

Clicker 11

  • Audio 0:45:58.730799
  • Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide:
    • CaO(s) + H2O(l) → Ca(OH)2(s)
  • A 5.00-g sample of CaO is reacted with 4.83 g of H2O. How many grams of water remain after the reaction is complete? (Ca:40.08, O:15.999, H:1.0079)
    • A) 0.00
    • B) 0.00991
    • C) 3.22
    • D) 1.04
    • E) 0.179