Salinity And Concentration Problems Conversion Worksheet (Page 3 of 3) in pdf

Salinity And Concentration Problems Conversion Worksheet Page 3

Page 3 of 3

21.2

For each problem, show your work.

1. Complete Table 2 below:

Table 2: Salinity of Famous Places

Place

Salinity

Amount of salt in 1 liter

Amount of pure water in 1 liter

(ppt)

(grams)

Salton Sea

California

Great Salt Lake

280

Utah

Mono Lake

210

California

Pacific Ocean

2. How many grams of salt are in 2 liters of seawater that has a salinity of 36 ppt?

3. A one-liter sample of seawater contains 10 grams of salt. What is the salinity of this sample?

4. You want to make a salty solution that has the same salinity as the Dead Sea. The salinity of the Dead Sea is

210 ppt. Write a recipe for how you would make 2 liters of this solution.

5. Five kilograms of seawater contains 30 grams of salt. What is the salinity of the volume of seawater?

You measure the salinity of a seawater sample to be 30 ppt. How many grams of salt are in this sample if the

mass is 1.5 kilograms?

7. A solution has 2 grams of a substance in 1,000,000 grams of solution. Would you describe the concentration

of the substance in solution as 2 parts per million or parts per billion?

8. A solution has 5 grams of a substance in 1,000,000,000 grams of solution. Would you describe the

concentration of the substance as 5 ppb or 5 ppm?

9. Menthol is a substance that tastes sweet and minty and causes a cooling effect on your tongue. The taste

threshold for menthol is 400 ppb. Could you taste menthol if there were 400 milligrams in 1,000,000 grams

of menthol solution? Could you taste menthol if there were 400 milligrams in 1000 liters of menthol

solution?

10. Above-ground pipelines are used to transport natural gas, an important energy source. Gas leaks are

potential problems with the pipelines. German Shepherd dogs can be trained to detect the gas leaks. The

dogs sniff along the pipeline and then indicate a leak by perking up their ears or pawing the ground. The

most sensitive electronic devices can detect gas leaks as low as 50 ppm. A German Shepherd can detect a

gas leak as low as 1 ppb. How many times more sensitive is the dog as compared to the electronic device?

Salinity And Concentration Problems Conversion Worksheet Page 3