The excess molar gibbs free energy of formation of solid solutions in the system au-cu can be represented by gxs = -28280 xauxcu (j) calculate the activities of au and cu in the alloy of xau = 0.5 and 900k.

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Will mark brainliest how many electrons can be held in the energy level n = 4?

Chemistry worksheet - i am not sure what they are asking for exactly?