Question

In: Chemistry

18) The major sink(s) for Cl- in the ocean is(are): Formation of authigenic minerals Consumption by...

18) The major sink(s) for Cl- in the ocean is(are):

  1. Formation of authigenic minerals
  2. Consumption by hydrothermal activities
  3. Consumption by reverse weathering
  4. Reaction in sediment pore waters
  5. All of above
  6. a, b and c
  7. a and d
  8. b and c

19) The correct sequence in the concentration of cations in seawater is:

  1. Ca2+> Na+ > Mg2+
  2. Na+ > Ca2+ > Mg2+
  3. Ca2+ < Na+ < Mg2+
  4. Na+ > Mg2+ > Ca2+

20) The major sink(s) for Mg2+ in the ocean is(are):

  1. Formation of authigenic minerals
  2. Consumption by reverse weathering
  3. Consumption by hydrothermal activities
  4. Reaction in sediment pore waters
  5. All of above

21) The correct sequence in the concentration of anions in seawater is:

  1. Cl- > SO42- > HCO3-
  2. SO42- > Cl- > HCO3-   
  3. Cl- > HCO3- > SO42
  4. Na+ > Cl- > HCO3

22) The major sink(s) for Na+ in the ocean is(are):

  1. Consumption by reverse weathering
  2. Formation of authigenic minerals
  3. Consumption by hydrothermal activities
  4. Reaction in sediment pore waters
  5. all of above
  6. a and b
  7. a and c
  8. b and c
  9. a and d

23) The major sink(s) for K+ in the ocean is(are):

  1. Consumption by hydrothermal activities
  2. Formation of authigenic minerals
  3. Consumption by reversing weathering
  4. Reaction in sediment pore waters
  5. All of above
  6. a, b and d
  7. a, c and d
  8. b, c and d

24) The correct sequence in oceanic residence time is:

  1. HCO3- > SO42- > Cl-
  2. SO42- > Cl- > HCO3-
  3. HCO3- < SO42- < Cl-

25) If water residence time in the ocean is 20,000 years, an element with a seawater to river water concentration ratio of 0.5 has a oceanic residence time of:

  1. 80,000 yr
  2. 40,000 yr
  3. 20,000 yr
  4. 10,000 yr

26) The major sink(s) for HCO3- supplied to the ocean by river runoff is(are):

  1. Reaction in sediment pore waters
  2. Consumption by reversing weathering
  3. Consumption by hydrothermal activities
  4. Formation of authigenic minerals
  5. All of above
  6. a and b
  7. b and c
  8. b and d

27) If water residence time in the ocean is 40,000 years, an element with a seawater to river water concentration ratio of 1.5 has a oceanic residence time of:

  1. 80,000 yr
  2. 60,000 yr
  3. 40,000 yr
  4. 10,000 yr

Solutions

Expert Solution

18) The major sink(s) for Cl- in the ocean is(are):

  1. Formation of authigenic minerals
  2. Consumption by hydrothermal activities
  3. Consumption by reverse weathering
  4. Reaction in sediment pore waters
  5. All of above
  6. a, b and c
  7. a and d
  8. b and c

19) The correct sequence in the concentration of cations in seawater is:

  1. Ca2+> Na+ > Mg2+
  2. Na+ > Ca2+ > Mg2+
  3. Ca2+ < Na+ < Mg2+
  4. Na+ > Mg2+ > Ca2+

20) The major sink(s) for Mg2+ in the ocean is(are):

  1. Formation of authigenic minerals
  2. Consumption by reverse weathering
  3. Consumption by hydrothermal activities
  4. Reaction in sediment pore waters
  5. All of above

21) The correct sequence in the concentration of anions in seawater is:

  1. Cl- > SO42- > HCO3-
  2. SO42- > Cl- > HCO3-   
  3. Cl- > HCO3- > SO42
  4. Na+ > Cl- > HCO3

22) The major sink(s) for Na+ in the ocean is(are):

  1. Consumption by reverse weathering
  2. Formation of authigenic minerals
  3. Consumption by hydrothermal activities
  4. Reaction in sediment pore waters
  5. all of above
  6. a and b
  7. a and c
  8. b and c
  9. a and d

23) The major sink(s) for K+ in the ocean is(are):

  1. Consumption by hydrothermal activities
  2. Formation of authigenic minerals
  3. Consumption by reversing weathering
  4. Reaction in sediment pore waters
  5. All of above
  6. a, b and d
  7. a, c and d
  8. b, c and d

24) The correct sequence in oceanic residence time is:

  1. HCO3- > SO42- > Cl-
  2. SO42- > Cl- > HCO3-
  3. HCO3- < SO42- < Cl-

25) If water residence time in the ocean is 20,000 years, an element with a seawater to river water concentration ratio of 0.5 has a oceanic residence time of:

  1. 80,000 yr
  2. 40,000 yr
  3. 20,000 yr
  4. 10,000 yr

26) The major sink(s) for HCO3- supplied to the ocean by river runoff is(are):

  1. Reaction in sediment pore waters
  2. Consumption by reversing weathering
  3. Consumption by hydrothermal activities
  4. Formation of authigenic minerals
  5. All of above
  6. a and b
  7. b and c
  8. b and d

27) If water residence time in the ocean is 40,000 years, an element with a seawater to river water concentration ratio of 1.5 has a oceanic residence time of:

  1. 80,000 yr
  2. 60,000 yr
  3. 40,000 yr
  4. 10,000 yr

queen_honey_blossom answered 2 years ago
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