The acid dissolves the spring. What happens to the energy stored in the spring.
207334
Potential Energy----->Kinetic Energy-----> Heat Energy\n\nIn compressed metal spring, the molecules in the spring comes closer due to pushing and the repulsive force between them is greater than that compared to uncompressed spring.\nSo when the spring is eaten by acid the molecules separate at higher speed than that in uncompressed spring.This extra Kinetic Energy is equal to the Potential Energy stored in compressed spring. The speeding spring molecules collide with acid molecules and this raises the acid temperature.\nThis heat energy is equal to the stored potential energy.
64742
The time necessary to diffuse H+ ions in the base. Thats it, when u add the necessary amount of acid at once.\n\nUsually when neutralization is carried out the conical flask (or whatever where the base is kept) is kept shaking to increase individual molecular motion. The more motion, the greater chance of H+ ion meeting OH- ion and neutralize each other in a given time interval\n\nH+(aq) + OH-(aq) --> H2O(l)
519979
Did you pay attention to the experiment?  Your hypothesis is what you think might happen.  In fact, you've already stated the hypothesis: \n"If the enzyme is boiled,it will become denatured and no longer function."\n\nThe discussion details what you think about the experiment and compares it to other knowledge.  It also tells why you got the results you did...it's basically an overview of the experiment and further research on why things did what they did.  \n\nI hope you have the results handy to refer to.
401911
Yes it has something to do with acids.\n\nLimestone is CaCO3 deposits. If you look at the acid-base reaction between an acid and CaCO3 you can see that the carbonate ion favors being protonated and because of the fact that it's protonated state is very unstable it readily becomes water and CO2 gas. \n\n2 H+ + CO3 2- ---> H2CO3 ---> H2O + CO2\n\nThese two products of the reaction are very healthy for environments. However, since this reaction doesn't occur in areas of mostly granite, these bi-products aren't produced leading to the acid having a more detrimental affect on the surrounding environment.
169492
The reaction Mg(OH)2 <--> Mg+2 + 2OH- will turn to the right when hydrochloric acid is added. This is because the acid eats away the hydroxides, and due to LeChatelier's principle, the equilibrium must shift to the right to account for this loss.\n\nAs for the Na2(EDTA), it will also shift to the right. The EDTA will form a complex with the magnesium ions, again, lowering the concentration of the Mg+2, so the equilibrium shifts to the right. Keep in mind that complex ions only form in molecules with empty d-orbitals.\n\nThis reaction is endothermic, like all dissolution (dissolving) reactions are. It takes energy to break the ions out of the crystal lattice structure.
519456
When heated the electrons move from the ground state to an exicited state.  They are unstable here and return to the ground state giving off energy in the form of a specific color.  Different energy levels will produce different colors
70255
Flour doesnt dissolve in water, it forms a suspension- If something dissolves, it forms a clear solution.  The previous answer is correct, it shrinks due to the loss of air.
314805
Gas molecules are dissolved to a certain extent depending on the intermolecular interactions with the gas molecule with the water molecules (for example), evaporation occurs at the surface of the liquid, and this is where the gas molecule, if given enough kinetic energy, can break apart from the water molecules.  With the increase in temperature, the average kinetic energy of the gas molecules and that of water becomes greater, and they can both escape with greater kinetic energies.\n\nhttp://www.freewebs.com/chemistryhomework
149956
Well the food is broken down by stomach acid (HCl). I'm not a biologist, but I believe all food undergoes the same general reaction.
532437
The object has kinetic energy (1/2)*m*v^2 when first at x=0. The work friction does consumes all that energy as the spring compresses and pushes the object back to x=0. Let the distance the spring is compressed be x1. Then \n(1/2)*m*v^2 = Ff*2*x1 = mu*m*g*2*x1\n\nWhen the spring is compressed to x1, the friction has decreased the energy in the system by half and the remaining half is all stored in the spring compression because the object has come to a stop - about to start the rebound. So\nFspring*x1 = k*x1^2 = (1/4)m*v^2\nIf you solve the 1st equation for x1 and substitute the result into the 2nd, you should get the required result.
386688
it forms hydrogen bonds.
68419
When a salt derived from a strong acid and a weak base dissolves in water, the solution becomes acidic. For example, consider the process\n \nNH4Cl(s) ----H2O ---> NH4+(aq) + Cl-(aq)\n\nThe Cl- ion has no affinity for H+. The ammonium ion NH4+ is  a weak conjugate acid of the base NH4+(aq) and ionizes as follows \n\nNH4+(aq) + H2O(l) <=> NH3(aq) + H3O+(aq)\n\nor simply  \n\nNH4+(aq) <=> NH3(aq)  + H+(aq)\n\nThe equilibrium constant ( or ionization constant) for this process is given by \n\n\n\nKa = Kw / kb  =   1.0*10^-14 / 1.8*10^-5 = 5.6*10^-10\n\n\n      x^2 / .10 =  5.6*10^-10\n\n           x^2  =   5.6*10^-11\n\n             x  =    7.5*10^-6 M  =  [H+]\n\npH  =  -log [H+]\n    \n    =  5.12\n\n     my answer is  C , NH4Cl
198063
Well, there's a decomposition reaction.\n\nH2CO3 <--> H2O + CO2\n\nCarbonic acid (H2CO3) doesn't not exist much at all, because it decomposes into H2O and CO2. But some of the carbonic acid remains, pushing up the hydronium concentration, which by definition makes water more acidic. Therefore, getting rid of the CO2 in water makes water less acidic (raising the pH).
105188
In the case of metals what happens is that the protons "steal" the electrons of the metal to evolve a H2, or hydrogen gas, in doing so, the metal for example Fe, turns to Fe++ which will dissolve, if the acid used is HCL then you'll get as products H2  and Iron Chloride, if the acid is sulfuric, you'll get H2 and Iron Sulfate. This is completely electrochemical, whereas when an acid attacks  cement is just chemical, and what evolves is carbon dioxide, with skin, I'm not so sure.
162198
Sounds like you've got too much time on your hands to me!  The ions in solution keep the water molecules farther apart from eachother on average than they would be in pure water.  Therefore the hydrogen bonds are weaker and the water will boil at a lower energy level.  At least that's what I'd guess.
283069
It would end up as heat. At least that is the usual place you say all the energy went when you can't otherwise account for it. Like where does the energy go when you drop a bean bag on the ground? Yell out loud? Turn on a light? slow your fall with a parachute? And on and on and on.
405285
C\n\nthis is the definition of a strong acid.\n\nIt ionizes completely in water rather than entering into an equilibrium as a weak acid would do.