That depends upon the length and diameter of the pipe connecting to the hot water tank. Also, the greater the distance, the more hot/cold mixing will occur, resulting in even greater water loss.
Most copper household Plumbing pipe is 1/2" in diameter, and hot water pipes may range from 10' to 80', depending on angles and turns in the plumbing. An 80' pipe will hold about 2 gallons of water. This is water that was heated in the water heater, but upon setting in the pipe gave up all, or most, of its heat to its surroundings.
Cold water is denser than warm water meaning that it moves more slowly and sinks. Therefore, the warm water currents of the oceans move faster and at the relative surface, meanwhile the cold water currents are at much deeper depths. Cold water doesn't have as much evaporation (meaning it slows and weakens hurricanes)
two
If the comb is plastic,and you want to bend it,the type of temeperature you would want is HOT because cold water would just make it cold,so it does matter.. very much
Potassium Manganate (VII) also called potassium permanganate, dissolves very quickly in hot water and much slower in cold water.
half a litre
Much of the time it is because of well water and the "hard" qualities of well water such as rust / lime etc... Sometimes turning on the hot water first and letting it run through pipes then turning it off and turning the cold water on helps. If that doesn't work, you may need to clean or replace the pipes, depending on how old they are.
over 1000 volts
The answer to this question is Dependent on many variables. This depends on where the water is getting lost, how fast it is getting lost, etc...
Cold water is denser than warm water meaning that it moves more slowly and sinks. Therefore, the warm water currents of the oceans move faster and at the relative surface, meanwhile the cold water currents are at much deeper depths. Cold water doesn't have as much evaporation (meaning it slows and weakens hurricanes)
Appx. 2 gallons of water is lost a day.
Hot because the atoms in the water are moving much faster then the atoms in cold water.
Water has no calories no matter what the temperature is
cold water is much heavier than hot water . the water becomes warm
Your albino Oscar's fins should not be turning black under normal circumstances. They can be turning black due to conditions such as too much ammonia in the water. Get your water tested to make sure.
it gets lost when there is too much sun in a certain area example deserts
Could be many reasons, give much more details. Is the compressor turning on, etc
it dies