If mass of the reactants is 150g and Ca(OH)2 has a mass of 122g, how many grams of H2 were produced? PL I ND ANSWER AP TEST IS DUE IN 15 MIN PLS PLS PLS HELP M

10-14. (a) when 100.0 ml of weak acid ha were titrated with 0.093 81 m naoh, 27.63 ml were required to reach the equivalence point. find the molarity of ha. (b) what is the formal concentration of a- at the equivalence point? (c) the ph at the equivalence point was 10.99. find pk. for ha. (d) what was the ph when only 19.47 ml of naoh had been added?

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .