Calculate the ph of a solution prepared by dissolving 0.750 mol of nh3 and 0.250 mol of nh cl 4 in water sufficient to yield 1.00 l of solution. the kb of ammonia is 1.77 × 10-4 .

Aluminum–lithium (al-li) alloys have been developed by the aircraft industry to reduce the weight and improve the performance of its aircraft. a commercial aircraft skin material having a density of 2.47 g/cm3 is desired. compute the concentration of li (in wt%) that is required.

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5