A 0.5 mol/dm solution of HCl and a 0.5 mol/dm3 solution of ethanoic acid have the same concentration but different pH values. Using the concept of dissociation explain why this

What provides structure to the human body?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms