Recent content by elasticities

But isn't evaporation of a puddle after rain a physical change that is not at equilibrium? Also is an open bottle of carbonated beverage (like a 2L bottle) an example of a chemical change not at equilibrium?

Here's another similar question. Homework Statement A supersaturated solution of sodium acetate was prepared by adding sodium acetate to a saturated solution and heated to dissolve added crystals. Finally the solution was left to return slowly to room temperature. A single crystal of sodium...

Homework Statement Crystals of CuSO4 * 5 H2O are blue. If you place a few small crystals in a beaker of water, water molecules break apart the ions and they enter into the solution. A few ions in the solution may re-attach to the crystals. Because more ions enter the solution than reattach to...

Really? Like a chemical process not at equilibrium would be a open can of pop...

Whats an example of a reversible physical change not at equilibrium?

The salt dissolves...? I'm sorry...I still don't get it. :S Thanks for explaining my other question, by the way. :) Much appreciated.

Another question on the tangent of thermochemistry - Why are fractions allowed in thermochemical equations but not otherwise?

The reaction is a neutralization reaction resulting in NaCl and H2O...right?

Homework Statement Say there was an experiment between NaOH and HCl. The reaction is a neutralization reaction resulting in NaCl and H2O. The question is: What if the two reactants weren't aqueous, but if NaOH was in solid pellets instead? Homework Equations Neutralization reactions are...

Why is it better to use water?

Homework Statement When acid gets on your skin, why must you flush the area with plenty of water rather than neutralizing with a base? Homework Equations The Attempt at a Solution I'm guessing it's because neutralization reactions are exothermic so heat could be released, thus...

Silly textbook, thanks though! :)

Ok thanks, I think the textbook answer was just wrong. :)

Maybe the answer is wrong in the textbook, it says 5m/s. It's Nelson Physics 12 from 2003 I think.

1/2m(v1)^2+mgh1=1/2m(v2)^2+mgh2 1/2(v1)^2+gh1=1/2(v2)^2+gh2 1/2(v1)^2+(9.81)(440m)=1/2(93)^2+(9.81)(387.2m) 1/2(v1)^2+(4316.4)=4324.5+3798.432 1/2(v1)^2=3824.532 v1=87.5m/s But this is not the answer in the answers section of the textbook.