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Reef Chemistry Question of the Day [HASHTAG]#187[/HASHTAG]
You have a very special storage room for your reef supplies. You keep it in an old doomsday bunker that a previous owner had installed expecting the world to end on a specific day. When it didn't, he went crazy and you got the property cheap.
This bunker is hermetically sealed, so no radioactive or toxic agents could enter. In fact, no chemicals can enter or leave when the door is sealed, and it is remarkable well constructed. It is 20 x 20 x 10 feet tall.
One day you get to wondering about evaporation and future events, and you set up an experiment. On one side of the room you have a 100 gallon aquarium that is 3/4 full of ordinary seawater. The humidity is fairly high that day in the room from the aquarium.
You also have an open salt bucket, also 3/4 full of aquarium salt, an open plastic bag of calcium chloride (1/2 full), and an open plastic bag of magnesium sulfate heptahydrate (1/2 full).
Finally, you leave a small fan running in the corner, blowing across the room at a solid wall.
You ask your friend, Dr. Who, to help with the experiment, as he has with many others.
"I'd like to see what will happen in the future", you tell him.
"Sure", he says, knowing exactly what will happen but humoring you. "Let's take this in a couple of steps. First stop, 100 years".
So this question relates to just this first stop, 100 years later.
What do the two of you most likely observe in the room?
1. The aquarium is filled to the top. There is some liquid in the bucket and bags. The fan has stopped for no apparent reason. The floor is dry.
2. The aquarium has damp salt in it, but no observable liquid. All of the smaller containers look similar (damp but not with apparent liquid). The fan has stopped for no apparent reason. There is water on the floor
3. The aquarium is half filled with water and some precipitated solids. The salt bucket is almost full. The other two containers just look like clumped solids. The fan has stopped for no apparent reason. There is no water on the floor
4. The aquarium has a small amount of water and some solids in it. All of the smaller containers are full to the brim. The fan has stopped for no apparent reason. There is water on the floor.
Next Question of the Day will move further into the future!
Good luck!
.
You have a very special storage room for your reef supplies. You keep it in an old doomsday bunker that a previous owner had installed expecting the world to end on a specific day. When it didn't, he went crazy and you got the property cheap.
This bunker is hermetically sealed, so no radioactive or toxic agents could enter. In fact, no chemicals can enter or leave when the door is sealed, and it is remarkable well constructed. It is 20 x 20 x 10 feet tall.
One day you get to wondering about evaporation and future events, and you set up an experiment. On one side of the room you have a 100 gallon aquarium that is 3/4 full of ordinary seawater. The humidity is fairly high that day in the room from the aquarium.
You also have an open salt bucket, also 3/4 full of aquarium salt, an open plastic bag of calcium chloride (1/2 full), and an open plastic bag of magnesium sulfate heptahydrate (1/2 full).
Finally, you leave a small fan running in the corner, blowing across the room at a solid wall.
You ask your friend, Dr. Who, to help with the experiment, as he has with many others.
"I'd like to see what will happen in the future", you tell him.
"Sure", he says, knowing exactly what will happen but humoring you. "Let's take this in a couple of steps. First stop, 100 years".
So this question relates to just this first stop, 100 years later.
What do the two of you most likely observe in the room?
1. The aquarium is filled to the top. There is some liquid in the bucket and bags. The fan has stopped for no apparent reason. The floor is dry.
2. The aquarium has damp salt in it, but no observable liquid. All of the smaller containers look similar (damp but not with apparent liquid). The fan has stopped for no apparent reason. There is water on the floor
3. The aquarium is half filled with water and some precipitated solids. The salt bucket is almost full. The other two containers just look like clumped solids. The fan has stopped for no apparent reason. There is no water on the floor
4. The aquarium has a small amount of water and some solids in it. All of the smaller containers are full to the brim. The fan has stopped for no apparent reason. There is water on the floor.
Next Question of the Day will move further into the future!
Good luck!
.