How air masses determine the temperature?

I kn that ammonia gas is less dense than air, but is there any rule to kn whether a kind of gas is less dense than air, says,...

Protons, neutrons and electrons...what are their charges and relative masses?

This has been bothering me recently, so here goes... Does the total mass of the universe determine the locally measured init...

Say you have a container and you have to fill it up with water or any liquid, and then have to find it's mass and substance a...

I think the answer is that the color depends on how hot the star is, but I'm not sure. I think some sites have said that it d...

ok I guess hot water is lighter than cold water but what about hot air and cold air? we can breathe cold air but not hot air ...

What is air's weight?

im doing a science project about pure maple syrup and they said one pan is full with ice. then the other bakingpan has to be ...

okay, im doing this chemistry asѕessment and i need to find websites that tell me how temperature affects copper chloride and...

How do protons, neutrons, and electrons determine the properties of an atom?