1) You have a new aquarium for S hamu the Killer Whale that contains 1,000,000 p

ID: 298153 • Letter: 1

Question

1) You have a new aquarium for S

hamu the Killer Whale that

contains 1,000,000

pounds of ocean water

with a salinity of 30 o/oo (ppt) by weight.

a. How many pounds of salt are in this water?

2) To show why we call the H

O molecule the Mickey Mouse molecule, draw it, label it clearly, and

indicate which side has net negative charge

You want to change the salinity from 30 o/oo to 10 o/oo

because Shamu is allergic to salt

. Do you

add

water, or salt, and how much?

4)Your community is drawing 1

,000 gallons of water per day

from your municipal aquifer, which currently

contains an estimated 1

,000,000 gallons of water. You have determined that there is no recharge

occurring to this aquifer. How long will it take

(in years)

for your community

to deplete this aquifer? Sho

ur work

1) Amount of ocean water = 1,000,000 pounds

Salinity = 30 o/oo (ppt) by weight. = 30 parts per thousand

a. Pounds of salt in the water = 30/1000 * 1,000,000 pounds

= 30,000 pounds

__________________________________________________________________________________

3) Salinity can be reduced by adding water or by removing salt.

Let us try to reduce it by removing salt.

30 ppt > 10 ppt

So we need to remove salt to change the salinity from 30 o/oo to 10 o/oo because Shamu is allergic to salt.

Amount of salt that needs to be removed = (30/1000 -10/1000) * 1,000,000 pounds

= 20,000 pounds

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