Good Luck!!!!!
Supplemental Instruction
Iowa State University / Leader: / Sara
Course: / Chem 177D
Instructor: / Bonaccorsi
Date: / 12/15/13
Basic Chemistry
1) (3.23+7.8) x 9.978
a. 109.8
b. 110
c. 109
d. 110.
e. 109.76
2) What is the Empirical formula for a molecule that is 60% Carbon, 8% hydrogen and 32% Oxygen by mass?
a. C6H8O2
b. C5H8O2
c. C3H4O
d. C4H4O4
e. CHO
3) Which of the following is NOT a diatomic element?
a. F2
b. N2
c. C2
d. H2
e. O2
4) Which is not a strong acid?
a. HClO3
b. HBr
c. H2CO3
d. HI
e. HNO3
5) What is being the Reducing Agent in the following reaction:
Cu(s) + 4HNO3(aq) à Cu(NO3)2(aq) + NO2(aq)+ 2H2O(l)
a. Cu (s)
b. HNO3 (aq)
c. Cu(NO3)2 (aq)
d. NO2 (aq)
e. H2O (l)
Naming and Shapes
1) What is the name of Fe2O3?
a. Iron oxide
b. Iron (III) oxide
c. Iron (II) oxide
d. Iron (III) dioxide
e. Iron dioxide
2) What is the molecular geometry of SF5-?
a. Trigonal Bipyramidal
b. Square planar
c. See saw
d. T-shaped
e. Square base pyramid
3) Which of the following does not have the tetrahedral electron geometry?
a. CH2O
b. H2O
c. CF3OH
d. PCl3
4) What is chlorite?
a. ClO-
b. ClO1-
c. ClO2-
d. ClO3-
e. ClO4-
5) What is the name of H2SO2?
a. Persulfuric acid
b. Sulfuric acid
c. Sulfurous acid
d. Hyposulfurous acid
e. Hydrosulfurous acid
Stoichiometry
1) If you have 10.0 g NaCl (mm=58 g/mol) how many molecules are there?
a. .172
b. 1.03 x 1026
c. 1.04 x 1023
d. 5.8
2) In the combustion of 9.13 g CH4 (mm= 16g/mol) with excess oxygen, how much CO2 (mm=44g/mol) is produced?
a. 50.2 g
b. 3.32 g
c. 20.5 g
d. 25.1 g
e. 77.1g
3) In the neutralization of 20 mL .7 M Ba(OH)2 with 15 mL unknown concentrated HCl, what is the concentration of HCl?
a. .933 M
b. 3.73 M
c. 1.50 M
d. 1.87 M
e. 1.40 M
4) Nitrogen fill a room which is 20 m3, and at STP, what is the mass of the Nitrogen?
a. 892 g
b. 25.0 kg
c. 12.5 kg
d. 25.0 g
e. 892 kg
5) In the reaction ___Na(s) + ___Cl2(g) à ___NaCl (s) If you have 10 mol Sodium and 10 mol Chlorine what is the limiting reagent?
a. Na(g)
b. Na(s)
c. Cl2(g)
d. NaCl(s)
Thermodynamics
1) If 5.3 kJ of work is done on a system and 740 J of heat is given off by a system what is the total enthalpy change?
a. 4560 J
b. -4560 J
c. 6040 J
d. -6040 J
2) Given:
C(s) + O2(g) à CO2(g) ∆H=-393 kJ/mol
S(s) + O2(g) à SO2(g) ∆H=-297 kJ/mol
C(s) + 2S(s) à CS2(l) ∆H=88 kJ/mol
Calculate ∆H for:
CS2(l) + 2O2(g) à CO2(g) + 2 SO2(g)
a. 2560 kJ
b. 800 kJ
c. -1075 kJ
d. -525 kJ
3) Which of the following is the hasnegative Electron Affinity
a. Cl
b. S
c. P
d. Si
e. Al
4) What is the entropy of the reaction: 2CO(g) + O2(g) à 2CO2(g)
∆Hf CO = -110 kJ/mol
∆Hf CO2 = -393 kJ/mol
a. -283 kJ
b. -503 kJ
c. -566 kJ
d. Not enough information
5) HBr(aq) + KOH(aq) à H2O(l) + KBr(aq) What is the qrxn if the temp increases from 0 C to 300K, when you have 50 mL of 1M KOH and 25 mL of 2M HBr. Assume properties of water
a. 8500kJ
b. -8500kJ
c. 94140kJ
d. -94140kJ
Random
1) Which of the following set of quatum numbers are correct?
a. n = 3, l = 3, ml = -3, ms = +1/2
b. n = 4, l = 3, ml = -1, ms = +1
c. n = 2, l = -1, ml = 0, ms = -1/2
d. n = 3, l = 2, ml = +1, ms = -1/2
e. n = 1, l = 0, ml = 1, ms = +1/2
2) Which has the lowest boiling point?
a. NH3
b. H2O
c. CH4
d. CH2OH
e. C2H5Br
3) What is the energy and wavelength of a radio wave with a frequency of 6.40 x 107?
a. λ =4.69m E=4.24x10-26
b. λ=.213m E=5.44x10-26
c. λ=.213m E=3.22x10-26
d. λ=4.69m E=6.78x10-26
4) Which of the following is the correct electron configuration of Se2-?
a. [Kr]
b. 1s22s22p63s23p64s23d104p6
c. [Ar]4s24p6
d. 4s23d104p6
e. 1s22s22p63s23p64s24p63d10
5) In the following molecule, how many atoms have an sp3 hybridization, and how many pi bonds are there?
a. sp3=4 pi=4
b. sp3=4 pi=5
c. sp3=4 pi=8
d. sp3=5 pi=4
e. sp3=5 pi=8
Final Jeopardy
1) Draw all the resonance structures for HPO42-
c = 3.0 x 108 m/s
h = 6.626 x 10-34 Js
c=λν
E = hν