The specific gravity of water is 1.0 True
<u>1) find molar mass of CH₄</u>

<u>2) determine moles of CH₄</u>

<u>3) multiply by avogadro's number</u>

<u>Answer:</u> The salinity of ocean water is 34 ppt.
<u>Explanation:</u>
Salinity is defined as the number of grams of salts present per kilogram of seawater. It is expressed in parts per thousand.
The formula used to calculate the salinity of ocean water or sea water is:

We are given:
Mass of salts = 17 g
Mass of sea water = 500 g
Putting values in above equation, we get:

Hence, the salinity of ocean water is 34 ppt.