the temperature is below one degree or the temp. of ice water
It depends on how cold the water is right before it freezes(> 0 degrees Centigrade for distilled H2O) and the amount of sugar dissolved in the water and at what temperature the water is. Let's standardize the temp and say it's 2 degrees C. For 2 glasses of distilled H2O, add a teaspoon of sugar in one glass and none in the other. Use a specific gravity battery tester. Put it in each glass and record both. Add more sugar in the !st glass and stir until dissolved. At that temp it may take some time. Eventually you will reach a saturation point at that temp at which no more sugar will dissolve. At that point the specific gravity (or density) should exceed the cold, distilled, pure un-sugared water. The question says nothing about the temp of the sugared water. But if you raise the temp of the sugared water you can dissolve more sugar than could be dissolved in the colder water. The specific gravity of the sugared water would get higher as you increase the temp., all the way to boiling. It is possible to boil the water and add more sugar until you get a super saturated solution. Let it cool slowly to room temp. Then add a pinch of sugar to the supersaturated solution and watch what happens. It's like honey that solidifies. Have to reboil to get it back into solution. RW
Be more Specific, Size of tank, temp of water, etc
4.18 joules over grams n temp
For land temp, wet your finger then hold it up in the air. For water temp, Dip your toe in the water>
water temp is 4C
Freezes.
water food temp, mating ect
These are not temperature numbers but specific heat numbers. They mean that it takes 4.184 Joules and 0.387 Joules respectively to raise water and copper of one gram by one degree celsius. So, as you can see, it takes a lot more heat to raise the temperature of water than it does of copper. Water has a very high specific heat.
Fish are cold blooded, but need to be adjusted to the temp of the water. Slowly if its hot water being adjusted them you need to slowly rise the temp of the water to the temp of the water out side and the opposite for lowering the temp by the way this is all wrong so please don't read that.
Which temp? Oil, Water or Outside air?
Yes, water has a very high "heat capacity".
Yes, but it is not recommended to run straight water in the cooling system.