Element X and Y have the following electronic configurations (X and Y are not the correct symbols of the elements.) х
Y
2,8,2
2.8.8.2
What is the atomic number of Element Y?

Which formula can be used to calculate the molar mass of hydrogen peroxide

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .

Kp is the equilibrium constant for dissociation of the propionic acid dimer. what is the sign of the slope for a plot of the natural logarithm of kp vs. inverse temperature for this reaction?