Answer :
Final answer:
The salinity of a 50-50 mixture of water mass P (38.2 0/00) and water mass Q (34 0/00) would be the average of the two, so the salinity would be 36.1 0/00.
Explanation:
To find the salinity of the mixture, you first need to acknowledge that the salinity given is in parts per thousand (0/00), often denoted as ppt. Here, it signifies the grams of salt contained in 1000 grams of water.
For Water mass P, salinity is 38.2 ppt, meaning it has 38.2 grams of salt per 1000g of water. Similarly, Water mass Q has a salinity of 34 ppt, so it has 34 grams of salt per 1000g of water.
Assuming a 50-50 mixture, it means we are mixing an equal amount of both waters. Therefore, the salinity of the mixture would be the average of the salinities of P and Q.
So, the salinity of the mixture will be (38.2 ppt + 34 ppt)/2 = 36.1 ppt.
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