EMPIRICAL FORMULA etc.

----A  SIDE----
MOLE REVIEW  

 1.  0.258 moles
 2.  0.0200 moles
 3. 66.0 moles	
 4.  2.50 x  10-4moles 
 5.  97.4 g
 6. 153 g
 7. 1.32 g
 8. 3820 g
 9.  24.3% Fe, 33.9% Cr, 41.8% O
10. 24.7% K, 34.7% Mn, 40.5% O
11. 32.2% Co, 15.3% N, 52.5% O
12. 88.8% Cu, 11.1% O
13. 79.9% Cu, 20.1% O
14.  Experimental=54.3% Fe
       Theoretical=52.2% Fe


----B SIDE----
% Composition Problems
1. 122.6, 31.9% K, 29.0% Cl, 39.1% O

2. 60.0,  6.67% H, 40.0% C, 53.3% O

3. 342.0, 42.1% C, 6.42% H, 51.5% O

4. 92.0, 39.1% C, 8.70%, 52.2% O

6. 246.4, 9.9% Mg, 13.0% S, 25.8% O, 51.1% H2O

8. 27.4% Na, 1.2% H, 14.3% C, 57.1% O

9. 70.6% C, 11.4% H, 10.5% O, 7.5% Na

11a. 50.0% S, 50.0% O

  b. 54.1% Ca, 43.2% O, 3.0% H

  c. 15.9% Ca, 1.6% H, 24.6% P, 50.8% O, 7.1% H2O

13. 79.9% Cu, 20.1% O

14a. 35.5g

  b. 70.0g

  c. 479.4g

  d. 219g

  e. 1201g

  f. 415g

  g. 84.95g

  h. 5.85g 


----C SIDE----
EMPIRICAL FORMULAS (1-10)

1. KClO3
2. CH2O
3. Na3AlF6
4. C5H7N
5. PO5
6. Cu3As2O6
7. Ca3P2O8 or 
     Ca3(PO4)2
8. C2H4O2 or
    H C2H3O2
9. C3H4O3 and C6H8O6
10. CH4

----D SIDE----
EMPIRICAL FORMULA (1-15)

1 a. 0.174 moles
   b. 6.60 moles
   c. 0.542 moles
   d. 33.2 g
   e. 1.31 x 104 g
   f. 4.65 kg
   g. 178 moles
   h. 23.5 g
   i. 2.61 x 102 moles

2 a. CrCl3
   b. IrS2
   c. NdI3
   d. RaBr2
   e. SnCl2I2
   f. Ag2WO4
  
3 a. HBF4
   b. MgCO3
   c. K2B5H9

4 a. K2CrO4
   b. Mg2P2O7
   c. Sr2SiO4
   d. Na3PO4

5 a. FeO
   b. Fe2O3
   c. Fe3O4

6 a. Na2SO3
   b. Na2S2O3
   c. Na2SO4

7 a. CoCl2.6H2O
   b.  Pb(C2H3O2)2.3H2O
   c. NiSO4.6H2O
   d. CaSO4.2H2O

8.  NaSH3O5  or NaHSO4.H2O
9.  Ca(NO3)2.3H2O (24.7%)
     Ca(NO3)2.4H2O (30.4%)

10. CrCl2 (57.9%Cl)
      CrCl3  (67.3% Cl)

11. NaSH5O4
      Na2S2O3.5H2O

12 a. CrO
     b. Cr2O3
     c. CrO2
     d. CrO3

13 a. K2Cr2O7
     b. K2CrO4

14. N2O4

15 a. P2O3 --------- P4O6
     b. P2O5 --------- P4O10

© 1997 [email protected]

This page hosted by Get your own Free Home Page