Marine Environment Q AP Biology Midterm X New Ta GChapter 5 om/courses/27386/qui

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Marine Environment



Q AP Biology Midterm X New Ta GChapter 5 om/courses/27386/quizzes/10590/take Vinc Google Maps Chris Brown-MYFRE -An error has occurre LBCC's Student Lear 5 pts Question 8 Salinity Part A Consider the following scenario: you take a sample of pure. filtered seawater at 35 parts per thousand (ppt) salinity and using a lab scale you measure its mass: it weighs 1 kg (-1.000g). You put your sample over a boiler and evaporate the water completely so that all you have left in the container are the salts that were previously dissolved in the seawater. Theoretically, how many grams of total salt residue would you get after you evaporate all the water out of the container? (round your answer so that there are no decimals) Hint: the rationale behind parts per thousand or ppt is similar to that dof percentage (i.e. parts per 100), so 35 ppt-3.5%

Explanation / Answer

35 parts per thousand means

in 1000 parts of water 35 parts of salt is present

If you will take 1000gm of saline water then you will get 35 gms of salt after evaporating in the boiler.

in 1000 gm of water salt present is 35 gm

so in 100 gm of water salt present is = (35/1000)*100= 3.5%

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