Determine the vapor pressure at 25 °C of an aqueous ethylene glycol (C2H602) solution that is 14.8% C2H602 by
mass. The vapor pressure of pure water at 25 °C is 23.8 torr.
a) 3.52 torr
b) 22.7 torr c) 1.14 torr d) 20.3 torr

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.