27. The quantity 1 cm3 is equal to:
1. 10-1 m3
2. 10-2 m3
3. 10-3 m3
4. 10-4 m3
5. 10-6 m3
28. The quantity 1 cm2 is equal to:
1. 10-1m2
2. 10-1m2
3. 10-3m2
4. 10-4m2
5. 10-6m2
29. The prefix "nano" (n) means
1. 109
2. 106
3. 10-3
4. 10-6
5. 10-9
30. The prefix "micro" (m ) means
1. 109
2. 106
3. 103
4. 10-6
5. 10-9
31. The prefix ‘deci’ (d) means
1. 106
2. 103
3. 10-3
4. 10-6
5. none of the above
32. Which one of the following is FALSE?:
1. Volume = concentration
´
amount
2. Volume can be measured
in ml
3. Concentration can be
measured
in mM
4. Amount can be measured
in mmol
5. Mass can be measured in
µmol
33. Which one of the following is FALSE?:
1. Amount = concentration
¸
volume
2. Volume can be measured
in ml
3. Concentration can be
measured
in mmol.l-1
4. Amount can be measured
in mmol
5. Mass can be measured in
mg
34. Which one of the following statements is FALSE?
1. The concentration of a
substance can be measured in nM
2. The rate of a reaction
can be measured in cm.min-2
3. Volume can be measured
in ml3
4. Volume = amount ¸
concentration
5. The concentration of a
substance can be measured in mg.ml-1
35. Which one of the following is FALSE?
1. The amount of a
substance
can be measured in mol
2. Volume can be measured
in dm3
3. Acceleration can be
measured
in g.s-2
4. The rate of a reaction
can be measured in g.s-1
5. The rate-constant of a
first-order reaction can be measured in s-1
36. Which one of the following is FALSE?
1. The concentration of a
substance can be measured inmM
2. Volume can be measured
in ml3
3. Acceleration due to
gravity
can be measured in cm.s-2
4. The rate of a reaction
can be measured in g.s-1
5. The half-life of an
exponential
decay can be measured in min
37. The rate of a reaction can be measured in:
1. moles.min
2. moles
3. moles.min-1
4. moles.min-2
5. moles.min-3
38. The rate of a chemical reaction can be
measured
in:
1. m.s-1
2. mm.l-1.min-1
3. nmol.l-1
4. mM
5. mmol.h-1
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