Lauren Dixon Mr. LaRock OCS 1005 March 2, 2011 Chapter 7 Homework 1. How are chemical methods of determining salinity dependent on the principle of constant proportions? The law of constant proportions states that although the total amount of dissolved solids might vary among samples, the ratio of major salts is constant in samples from many locations. In other words, the percentage of various salts in seawater is the same in samples from many places, regardless of how salty the water is. This is used in chemical methods because Chlorinity is easy to measure. Due to the law of proportions, we know that we can calculate the salinity in percentage by multiplying the percentage of Chlorinity by 1.80655. 2. How are seawater’s conservative constituents different from its nonconservative constituents? Give an example of each. Conservative constituents are the constituents of seawater that occur in constant proportions or change very slowly through time. This means that they have long residence times. These include the inert gases that are chlorine, sodium, and magnesium.
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This note was uploaded on 03/22/2011 for the course OCS 1005 taught by Professor Condrey during the Spring '08 term at LSU.