At what temperature range does hydrogen have the greatest potential for expansion given an increase in temp?
602468
Absolute Zero or around 20 K.\n\nMelting point 14.01 K  (−259.14 °C, −434.45 °F) \nBoiling point 20.28 K  (−252.87 °C, −423.17 °F)
94789
Use Boyle's Law for that. Assuming the temperature is always constant, the product of pressure and volume is always constant.\n\nP * V = k\nor\nP1 * V1 = P2 * V2\n\nIf temperature is included in the equation, you could either use the combined gas law or the ideal gas law.\n\nNote: Elevation plays a significant role in Boyle's Law so it will have a difference in the gauge readings if you relocate it from sea level to the mountaintop.
611632
space shuttle burns hydrogen. imagine you're standing under it when it launches. endothermic or exothermic?\n\ncorrect reaction formula was already given.
870586
this is not just a argument based on semantics - metallic hydrogen is a real material at ultra low temperatures \n\nthe problem is that the word metal describes a state of matter ( in it's solid form )and only that ( is vaporized iron a gas )\n\nhydrogen can exist as a solid a liquid a gas and a plasma ( the solid is referred to as metallic hydrogen )
823151
I don't really understand what your question is.  In the first place, heat always flows from a warmer object to a cooler one.  That maximizes the number of possible arrangements of energy quanta, leading to an increased entropy.
273055
This is my guess:\n\nThe hottest temperature is probably when the particles move at almost the speed of light, I don't know what that is though.\n\nTemperatures can be as high as billions of degrees.\n\nHowever, temperature don't necessarily mean how hot it is, at temperatures of billions of degrees, you could still freeze!
354284
The volumne of a gas increases to fill its container and both H and O are gases at room temperature.  Is volume really what you want to know?
853370
The concept of 1.5M hydrogen gas is rather odd, but, yes, you use the Nernst Equation.  Don't forget to convert the pH to a molarity of H+ ions.
909359
More fusion energy would make the Sun hotter. When a confined gas heats up in a constant volume, it increases the pressure. But since the Sun is free to expand, it does that instead of increasing the pressure in the core. The expansion cools the Sun the same way that expanding freon in a refrigerator cools. This reduces the reaction rate, which reduces the pressure. But since the Sun is free to shrink under its own gravity, it does that instead of cooling. The result is a balance between the heat of fusion reactions trying to puff it up and gravity trying to squeeze it down.
668561
Most liquids dilate when heated and therfore the density increases with temperature. Water is an exception below 4 degrees Celsius. The reason are hydrogen bonds.\n\nIn the H20 molecule the hydrogen atoms share their electrons with the oxygen atom in socalled covalent bonds. But the oxygen atom attracts the electrons very strongly and takes more than its share.\n\nAs a consequence the hydrogen atoms form bonds with the oxygen atoms of other water molecules. These hydrogen bonds are weaker than the covalent bonds.\n\nThe result of the existence of hydrogen bonds is that ice is organised in a hexagonal structure which is less dense than water. These structures form already in liquid water too, but to a lesser degree.\n\nThe end result is a tug-of-war between the effect of the hydrogen bonds and the normal dilation of water. With a maximum density at 4 degree C as a consequence.
911178
fusion \n\nIT CONVERTS HYDROGEN INTO HELIUM
783249
Change it to 1.27 × 10^4\n\nYour value for Specific Heat of Zn is only 3 sigfigs, thus, your answer can only be up to 3 sigfigs.
827524
Easier compared to one with a higher heat capacity:\n\nH/(m*Cp) = (delta T), where m is the mass of the object, H is the heat that must be added (or removed) to raise (or lower) its temperature, delta T is its change in temperature, and Cp is its heat capacity. From the above formula, you can see that larger values of Cp result in small temp. changes, for the same heat amount.
887467
Im a little rusty on the thermodynamics, but lets see if this helps.\nV/T (initial)=V/T (final) since no gas is lost or added  Raising the temperature on a container that is free to expand does not change the pressure, so you can find the change in volume with temperature.  Since V=A*h, you can find h.\n\nNow, the problem is that the vessel is not entirely free to expand, and acts on a spring, with force equal to F=k*h.  This force is related to the pressure created by the expanding vessel as simply F/A.\n\nAll values are given, so I think you are set.
554328
Munir is right.  H2 will behave most like an ideal gas in a condition with Highest temperature and lowest pressure, making your Choice 3.
795464
wow... opposite answers to the same question... hmmm In a sense, they are both correct. The volumetric changes experienced by solids due to temperature changes is very small, but there is a slight change indeed. Every solid has its own coefficient of volumetric change for every degree change in temperature. A prime example of solids changing volume are the expansion joints you see in bridges. Also, I think the empire state building is like 6 inches taller in summer than in winter... something like that. Gasses on the other hand experience much larger volumetric changes. Temperature as well as pressure will greatly affect the volume of a gas. Consider oxygen, it can be compressed to a liquid. \n\nOn the other hand, let me second guess this question, maybe it should read, why can a gas be compressed and not a liquid? In a gas, the molecules are spaced wide apart, farther apart than their electric charges do not affect the molecule next to them. In a liquid, the molecules are packed as tight as they physically can be packed. They cannot be compressed farther. Only temperature can affect the volume of a liquid as mentioned above. Hope this helps some!
782736
If ideal gas law is obeyed...\n\ndensity = mass/V == n/V\n\nPV = nRT\nP = (n/V)RT\n\nIf temp is held constant then increasing density increases pressure.