How was salinity measured before the use of salinometers? a. ...

[imowrer]

How was salinity measured before the use of salinometers?
  a. Silver nitrate was used to measure the chlorinity
  b. The mass of the salts were measured after water was evaporated
  c. The conversion of sodium levels to salinity based on equations
  d. Measure of conductivity

Question 2

The level of ____ increases with depth which is a factor in the calcium carbonate compensation depth.
  a. Nitrogen
  b. Oxygen
  c. Carbon Dioxide
  d. Ammonia

[ntsoane kedibone]

Answer to Question 1

ANS: A
Marine chemists used silver nitrate to measure the chlorinity of a water sample. Equations were then
used measure convert the chlorinity to the salinity of the sample. The procedure is calibrated against a
known sample. Now salinometers are used by measuring the electrical conductivity. Information can
be found in the section Seawater Consists of Water and Dissolved Solids.

Answer to Question 2

ANS: C
Carbon dioxide concentrations are higher at deeper depths. Contrastingly, oxygen levels decrease as
the depth decreases. This is true until middle depths of the ocean; then, oxygen levels begin to increase
again. Information can be found in the section Gases Dissolve in Seawater.

[imowrer]

Thank you!

[ntsoane kedibone]

Always glad to help...