REVIEW QUESTIONS

Chapter 7

Calculate each of the following quantities:
  1. Number of moles in 112 g of aspirin,
  2. Mass of 3.82 moles of silver acetate,
  3. Number of molecules in 1.75 moles of
  4. Number of molecules in 20.0 g of
  5. Classify the type of each of the following reactions:
    a)
    b)
    c)
    d)
  6. Balance each of the equations shown below:
    a) ___
    b)
    c)
    d)
  7. Predict the products and write a balanced equation for each of the following:
    a) Decomposition: +
    b) Combustion: +
    c) Combination:
    d) Double replacement: +
Chemistry 51
8. Each of the reactions below occur in the cells of the body. Identify each as endothermic or exothermic:
a) Succinyl Succinate
b)
c) Phosphocreatine Creatine
9. In each reaction below, identify the bold type substance as oxidized or reduced:
a)
b)
c)
10. Chromium and oxygen combine to form chromium (III) oxide.
a) Write a balanced equation for this reaction.
b) How many moles of react with 4.50 mol of Cr ?
c) How many grams of chromium (III) oxide are formed when 24.8 g of Cr react?