Question

1. the rule of constant proportions expresses that:

the percentage of sodium varies with depth.

salinity varies depending on the season.

the percentage of chlorine varies with geographical location.

the relative concentration of ions does not change.

salinity varies with geographical location.

Explanation:

The rule of constant proportions (also known as Forchhammer's principle) in oceanography states that, despite salinity differences in seawater samples from various locations or depths, the relative concentrations of major ions (such as chloride, sodium, etc.) remain constant. This means that the ratio of one major ion to another does not change. For example, the ratio of chloride to sodium in seawater is relatively stable across different oceanic regions, depths, and seasons.

Answer:

the relative concentration of ions does not change.