The Oxidation Numbers Loses Electrons Questions
  1. The reaction between zinc and hydrochloric acid can best be described as a ……… reaction
  2. Acid/ base
  3. Gas forming
  4. Redox
  5. Precipitation
  6. What is the oxidation number of Cl in HClO
  7. +1
  8. +3
  9. -1
  10. +5
  11. According to the equation:

N2O3 (g) + 6H2 (g) 2NH3 (g) +3H2O (g)

How many moles of NH3 (g) could be formed from the reaction of 0.22 mol of N2O3 (g) with 0.37 mol of H2 (g) ?

  1. How many grams of NaOH are required to prepare 200.mL of a 0.450 M. solution? (molar mass of NaOH =40.00 g/mol)
  2. Exactly 29.89 ml of 0.1 M NaOH initially at 23.1C was added to 17.95 ml of 0.15 M CH3COOH in constant pressure calorimeter. If the temperature after reaction was 28.4C, determine the absolute value of the heat evolved (in J) by the reaction. The specific heat of water is 4.184 J/g C.
  3. Calculate ΔH (in KJ) for the following reaction at 25.0 C

Fe3O4 (s) + CO (g) 3FeO (s) + CO2 (g)

ΔH (KJ/mol) :

-1118 -110.5 -272 -393.5

  1. What is the energy in Joules of one photon of microwave with a wavelength of 0.158 m?
  2. What element is represented by the configuration 1s2 2s2 2p6
  3. How many moles of C3H8 are there in 450 grams of C3H8?
  4. When balanced, what is the coefficient of the oxygen in the equation

C2H4 + O2 CO2+ H2O

  1. Determine the percent platinum in cisplatin, PtCl2(NH3)2
  2. A mole of sulfur trioxide molecules contains how many oxygen atoms ?
  3. Give the formula for the ionic compound most likely formed between cesium and fluorine
  4. Which pair of element has the most similar chemical properties?
  5. C and F
  6. A and Se
  7. Li and Be
  8. P and As
  9. Which one of the following reactions has the largest atomic ratio?
  10. S
  11. Sb
  12. Se
  13. As
  14. How many lone pairs are on the central atom of BrCl3?
  15. 4
  16. 3
  17. 2
  18. 1
  19. How many electrons will be in the correctly drawn Lewis Structure for CHCl3 ?
  20. 26
  21. 32
  22. 16
  23. 24
  24. A sample of F2 in a 1.37 L metal cylinder at 0.95 atm has its temperature changed from 304.8K to 386.8 K while its volume changed by a piston to 1.64 L. what is the final pressure in atm?
  25. Consider the four gases SO2,O2,CO2 and H2. Which one is the correct occurs of decreasing average speed at 100 C ?
  26. What is the primary intermolecular force in a sample of (CH3)3N ?
  27. What is the hydronation in the central atom in H2O ?
  28. The real bond angle for NH3 is expected to be ( answer) the ideal bond angel
  29. Less than
  30. Greater than
  31. Cannot be determine
  32. Equal to
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