Ce cantitate de precipitat(BaSO4) se obține prin reacția dintre 196g soluție acid sulfuric 40% cu clorură de bariu?
Se dau masele atomice: A S = 32, A O = 16, A Cu = 64, A H = 1, A Ba =137.
repede va rog

The following questions a24 - a26 relate to 100 ml of 0.0150 m solution of benzoic acid (c6h3cooh). ka(c6h3cooh) = 6.4 x 10^-5. what is the ph of the solution after the addition of 1 x 10^-3 moles of naoh? you may assume no volume change to the solution upon addition of the naoh.