A solution of HBr with a volume of 25.00 mL is titrated to the endpoint, with 0.550 M Ba(OH)2. If it takes 24.56 mL of Ba(OH)2, what is the original concentration of HBr in
the solution?
2HBr(aq) + Ba(OH)2 (aq) → 2H20 (1) + BaCl2 (aq)

The boiling point of liquids is very high what does it indicate

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]