Randy Holmes-Farley
Reef Chemist
View BadgesStaff member
Super Moderator
Excellence Award
Expert Contributor
Article Contributor
R2R Research
My Tank Thread
- Joined
- Sep 5, 2014
- Messages
- 67,508
- Reaction score
- 63,912
Reef Chemistry Question of the Day #29
You are measuring the salinity of your reef aquarium with a floating glass hydrometer. The room temperature is 72 degrees F, and the hydrometer has been in that room overnight. You take out some water at 81 degrees F, put it into a bucket, and take a quick look at the hydrometer in it. Just then the dog runs by, reeking of skunk, which it must have encountered in the back yard. By the time you get done dealing with the dog and get back to the aquarium, the water has cooled to 72 degrees F.
When you look at the hydrometer, what do you see?
A. It is floating higher in the water than it was earlier.
B. It is floating in exactly the same position as earlier.
C. It is floating lower in the water than it was earlier.
D. Not enough information is given to know.
Good luck!
.
You are measuring the salinity of your reef aquarium with a floating glass hydrometer. The room temperature is 72 degrees F, and the hydrometer has been in that room overnight. You take out some water at 81 degrees F, put it into a bucket, and take a quick look at the hydrometer in it. Just then the dog runs by, reeking of skunk, which it must have encountered in the back yard. By the time you get done dealing with the dog and get back to the aquarium, the water has cooled to 72 degrees F.
When you look at the hydrometer, what do you see?
A. It is floating higher in the water than it was earlier.
B. It is floating in exactly the same position as earlier.
C. It is floating lower in the water than it was earlier.
D. Not enough information is given to know.
Good luck!
.