« previous next »

Author Question: How was salinity measured before the use of salinometers? a. Silver nitrate was used to measure the ... (Read 61 times)

imowrer

  • Hero Member
  • *****
  • Posts: 514
on: Aug 22, 2018

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

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Aug 22, 2018
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.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

imowrer

  • Hero Member
  • *****
  • Posts: 514
Reply #2 on: Aug 22, 2018
Thank you!


ntsoane kedibone

  • Sr. Member
  • ****
  • Posts: 333
Reply #3 on: Aug 22, 2018
Always glad to help...


« previous next »
 

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

When to measure vital signs When to measure vital signs
Calipers are used to measure the body fat on the triceps of a patient. Calipers are used to measure the body fat on the triceps of a patient.
Using a DMM to measure the open-circuit voltage of a battery. Using a DMM to measure the open-circuit voltage of a battery.
Set the meter to read ohms (V) and measure the resistance of the relay coil. The usual reading for ... Set the meter to read ohms (V) and measure the resistance of the relay coil. The usual reading for ...
Using a goniometer to measure joint ROM. Using a goniometer to measure joint ROM.
Goniometer measure of joint range of motion Goniometer measure of joint range of motion
Video: Cellular Defects - Osteoblasts, Osteoclasts and Osteocytes

For a complete list of videos, visit our video library