General Chemistry Sample Exam 1 and Outline by JarrellRoot


									                             General Chemistry Sample Exam 1 and Outline

Useful information:
   System              LENGTH:                 VOLUME                 MASS              Temperature
   English:       1 ft = 12 in           1 gal = 4 qt          1 lb = 16 oz
                  1 mile = 5280 ft       1 qt = 2 pints        1 ton = 2000 lb     T(°F) = 1.8 T(°C) + 32

                                         1 pt = 16 fl oz
   SI-            2.54 cm = 1 in         0.946 L = 1 qt        453.6 g = 1 lb
   English:       1.609 km = 1 mi        3.785 L= 1 gal        28.35 g = 1 oz      T(°C) = [T(°F) – 32] / 1.8

                                         29.57 mL = 1 fl oz.   1 kg = 2.205 lb
   Misc. info                    1 mole = 6.02•1023                      Density H2O: 1.0 g / cc
                                                                          2.5      Subatomic Particles in the atom
Chapter 1: Matter and Measurements                                        2.6      Periodic Law and Periodic Table
1.1    Atoms and Molecules                                                2.7      Atomic and Molar Mass (the mole)
1.2    Scientific Approach to Knowledge
1.3    Classification of Matter                                           Chapter 3: Molecule, Compounds and Rxn
1.4    Physical and Chemical Changes                                      3.1    Chemical Bonding
1.5    Energy:                                                            3.2    Representing compounds
1.6    Units of Measurements                                              3.3    Ionic Compounds
1.7    Reliability of Measurements, Significant Figures                   3.4    Molecular Compounds
1.8    Solving Chemical Problems                                          3.5    Formula Mass
                                                                          3.6    Composition of Compounds
Chapter 2: Atoms and Elements                                             3.7    Chemical Formula from Expt Data
2.1    Early ideas of Matter                                              3.8    Writing Balance Chem Equations
2.2    Discovery of the Electrons                                         3.9    Organic Compounds
2.3    Laws leading to Modern Atomic Theory
2.4    Structure of the atom

1       The universe can be classified to the following categories:                                     Universe
        elements, homogeneous mixture, energy, heterogeneous mixture,
        substances, matter, compound. Organize these in the hierarchy
        chart shown.

        Next place the following in the correct category in your chart:
        sand, salt water, ammonia, diamond, heat

2           Convert the following: i) 3.5 •106 µm to cm         ii) 5.32 millimole to moles               iii) 32.0 lb/in2 to mmHg

3           Illustrate by words (and pictures when possible) the meaning of the chemical representation below and then give an
            example of each.
            Chemical formula, Molecular formula, Empirical formula, Formula unit and Structural formula

4           Solve the following and express the answer in scientific notation with proper significant figures.
            i) % 47.825 " 9.4 (cm )   1 in                                                iii) 50.01 mL + 1.24•10-3 L + 1.23•102 cc
               #              &
                                           =          ii) 670,000 ! 12.4 µg =
               $    0.120     '     2.54cm

5           For the following measurement indicate the standard unit in the English, Metric and SI system.
    !               Type of measurement               Metric                     English                   SI
            i              Length
            ii           Temperature
            iii             Mass

6           Complete the following table.
                  Atomic #     Mass #         A Chg           Charge             No. of       No. of          No. of electrons
                     Z           A                                              neutrons      protons
            i                                 128     -2

            ii                                  ? +2                              113                               73
7       State which individual (from selection) is responsible for the following:                                       Choices:
     i) First conceptualize the atom.                                                       Thomson, Millikan, Zeno, Davy, Bohr,
     ii) Though that matter was composed of earth, water, wind and fire.                    Darwin, Lavosier, Boyle, Rutherford,
     iii) Proposed the "Plum-Pudding Model Theory".                                          Chadwick, Democritus, Lewis, Bohr,
     iv) Performed the Oil drop experiment.                                                  Proust, Empedocles, Dalton, Bacon,
     v) Proposed the "Law of Conservation of Matter".                                        Bohr, Faraday, Schrödinger, Planck

8      i) Calculate the distance of one light year in miles.
       ii) How many pennies would be required to span this distance?
       Useful info: Light travels at a speed of 3.00 •108 m/s, 1 year = 365 days, 1 penny = 2.0 cm

9      Write the formulas for the compounds, which form when the following atoms and/or ions combine.
                                 permanganate           phosphide              chromate                Nitrite
       i) sodium
       ii) vanadium (IV)
       iii) Give the proper name for this compound Mn(HSO3)2    iv) Give the proper name for this compound HBrO
       v) Write the formula for hypoarsenous acid                    vi) Write the formula for cadmium hypoiodite
       vii) Write the stick formula of 2,3-dimethylheptane           viii) Draw and name all the isomers of hexane.

10     A sucrose solution has a specific gravity of 1.06. What is the mass of 1-gallon of this solution in pounds (lb)?

11     i) What is the name and molecular formula of the ionic specie with the formula MX, where the atom M has 20 protons
             and X is found in the second period ?
       ii) If the anion is changed to the carbonate ion, what is the new formula and chemical name for the compound?
       iii) If the cation-M, in your answer in (ii) is change to a transition metal with a +3 charge, in the fourth period and in
             the same family as Ru, what is the formula and name of the new specie ?
       iv) Give the molecular formula and name of the molecular specie with the formula XY, where X is the element in
           diamonds and Y is the element, which support life ?

12     ( pts) A 3 year-old child weighing 35 lb is suffering from a middle ear infection for which ampicillin is
       prescribed. The Physicians' Desk Reference recommends that this antibiotic be administered at a daily
       rate of 100 mg ampicillin per kg of body weight. It also recommends that the medication be given in equally
       divided doses at 8-hour intervals.
       i) How many milligrams of ampicillin should be given to this child ever 8 hours ?
       ii) The ampicillin is supplied as an oral suspension containing 200 mg ampicillin per 5 mL. How many teaspoon
       of the medicine should the parents administer to the child every 8 hours? 1 drop = 0.05 mL and it takes
       100 drops to fill one teaspoon.

13     Combustion of a sulfide of bismuth compound, BixSy (50.00 g) in excess oxygen produced 45.30 g of the
       compound, Bi2O3.
       i) What are the IUPAC compound name, empirical formula and the formula weight of the sulfide of bismuth
           (BixSy) compound?
       ii) What is the oxidation state of the sulfur and the bismuth in this compound?
       iii) Suppose instead of producing 45.30 g dibismuth trioxide in the final product of the combustion, 45.30 g
           of the compound Bi2O5 is produced instead, how would this affect the y-value in the empirical formula
          of BixSy ? (5 pts)

14     What is the percent composition of each of the element in ammonium biphosphate

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