The formula for oxalic acid is (COOH) 2 by tob11086

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									     The formula for oxalic acid is (COOH)2. How
     many atoms does each molecule contain?


     1.    6                                                 20% 20% 20% 20% 20%

     2.    4
     3.    8
     4.    10
     5.    5


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     What is the molecular formula
     for acetic acid?
     1.    CH3COOH                                           20% 20% 20% 20% 20%

     2.    CH3COCH3
     3.    CH3CH2OH
     4.    CH3CH2CO2H
     5.    CH3CH2OCH2CH3


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     What is the formula for iron(III)
     oxide?
     1.    FeO3                                              20% 20% 20% 20% 20%

     2.    FeO2
     3.    Fe3O2
     4.    Fe2O3
     5.    Fe3O


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     Choose the name-formula pair
     that does not correctly match.
     1. magnesium phosphate                                 20% 20% 20% 20% 20%
        Mg3(PO4)2
     2. ferrous sulfite FeSO3
     3. silver carbonate AgCO3
     4. potassium fluoride KF
     5. cupric bromide CuBr2


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     If 6.653 g of calcium combines exactly with 26.53 g of
     bromine and 12.29 g of zinc combines exactly with 30.04 g of
     bromine, what is the mass ratio of one atom of calcium to one
     atom of zinc?

     1.    1.68                                              20% 20% 20% 20% 20%

     2.    0.613
     3.    0.541
     4.    1.85
     5.    0.133


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     Calculate the number of atoms in
     40.5 g of aluminum.
     1.    900                                               20% 20% 20% 20% 20%

     2.    2.5 x 10-24
     3.    9.0 x 1023
     4.    6.6 x 1026
     5.    1.8 x 10-21


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     What is the formula weight of
     Fe(NH4)2(SO4)2•6H2O?
     1.    392 amu                                           20% 20% 20% 20% 20%

     2.    384 amu
     3.    412 amu
     4.    376 amu
     5.    436 amu


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     How many atoms of hydrogen
     are there in 88 g of C6H6?
     1.    3.6 x 1023                                        20% 20% 20% 20% 20%

     2.    6.8 x 1022
     3.    2.6 x 1023
     4.    4.1 x 1024
     5.    5.3 x 1023


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     How many hydrogen atoms are present in
     7.50 g of (NH4)2Fe(SO4)2•6H2O?


     1.    5.16 x 1022                                       20% 20% 20% 20% 20%

     2.    2.30 x 1023
     3.    1.15 x 1022
     4.    4.65 x 1023
     5.    3.35 x 1024


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     Calculate the percent
     composition of FeSO4.
     1.    %Fe = 27.9%, %S = 24.1,                           20% 20% 20% 20% 20%
           %O = 48.0%
     2.    %Fe = 16.2% , %S = 27.9%,
           %O = 55.8%
     3.    %Fe = 33.2% , S = 9.5% ,
           %O = 57.2%
     4.    %Fe = 36.8%, S = 21.1%,
           %O = 42.1%
     5.    %Fe = 25.1%, %S = 21.6% ,
           %O = 53.2%

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     What would be the empirical formula for a
     compound containing 33.36% calcium,
     26.69% sulfur, and 39.95% oxygen?
     1.    CaSO4                                             20% 20% 20% 20% 20%

     2.    CaSO2
     3.    CaSO
     4.    CaSO3
     5.    Ca2S2O5


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     The complete combustion of a hydrocarbon
     produced 352 mg of CO2 and 216 mg of H2O. What
     is the simplest formula of this hydrocarbon?

     1.    CH                                                20% 20% 20% 20% 20%

     2.    CH
     3.    C2H3
     4.    CH3
     5.    C3H2


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     The complete combustion of a hydrocarbon produced 26.4 g
     of CO2 and 5.40 g of H2O. Another experiment determined
     the molecular weight of this hydrocarbon to be approximately
     52 g/mol. What is its molecular formula?

     1.    C2H4                                              20% 20% 20% 20% 20%

     2.    CH
     3.    C4H4
     4.    C2H2
     5.    CH4


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     What mass of lead is present in 5.05 kg
     of mendipite, PbCl2•2PbO?

     1.    2.89 kg                                           20% 20% 20% 20% 20%

     2.    4.05 kg
     3.    5.05 kg
     4.    3.68 kg
     5.    4.33 kg


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     What mass of fluorine is contained in 2.00 tons of
     cryolite that is 42.0% pure Na3A1F6? (No other
     compounds containing fluorine are present.)

     1.    912 lb                                            20% 20% 20% 20% 20%

     2.    832 lb
     3.    456 lb
     4.    304 lb
     5.    152 lb


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