Does Water Temperature Make your Tank Heavier??

[beN]

I am wondering because I came across this calculator that ask's you to provide the temperature in & outside of your tank. So Does Warm Water weigh more then Cold Water??

[halonine]

Uhm, I think warm water would be lighter than cold. Cold water is more dense is it not?

Maybe I am making this up lol. Makes sense in my head.

[2wheelsx2]

Volume changes with temperature, but mass does not. Density is a function of volume, that's why it changes with temperature, but I don't know how it can make a measurable difference in a tank.

[beN]

but here is what throws me off. When water is warm it has less oxygen but when water is cold it has more oxygen??

[2wheelsx2]

That's due to the energy level of the gas molecules. The same reason you see bubbles when you boil water there are bubbles. The temperature excites the molecules causing them to go into gas form separate out of the water.

[martialid10t]

but here is what throws me off. When water is warm it has less oxygen but when water is cold it has more oxygen??

I don't think that would even make a measurable difference i.e. the weight of air

[Kitsune]

I am wondering because I came across this calculator that ask's you to provide the temperature in & outside of your tank. So Does Warm Water weigh more then Cold Water??

Out of curiosity, what is the calculator calculating?
Depending on that we can probably tell you why its asking.

[Diztrbd1]

I don't think the difference would be very much either way but maybe these will help :
WikiAnswers - Which is heavier cold or hot water
WikiAnswers - Why is cold water denser then hot water
WikiAnswers - Why does cold water have more oxygen in it than hot water