If 200 ml of aqueous 0.862 m hcl is mixed with 20. ml of aqueous 0.431 m ba(oh)2 in a constant-pressure calorimeter of negligible heat capacity, the initial temperature of both solutions is the same at 20.48ºc. the neutralization reaction h+(aq) + oh–(aq) → h2o(l) has a δhº = –56.2 kj/mol.

what is the final temperature of the mixed solution? (assume all solutions have a density of 1.00 g/cm3 and a specific heat capacity of 4.184 j/g•ºc)

Select the correct value for the indicated bond angle in each of the compounds. o−o−oo−o−o angle of o3 90° 109.5° < 109.5° 120° < 120° 180° f−b−ff−b−f angle of bf3 180° < 109.5° < 120° 120° 109.5° 90° f−o−ff−o−f angle of of2 < 120° 120° 90° 109.5° 180° < 109.5° cl−be−clcl−be−cl angle of becl2 90° 109.5° 180° 120° < 109.5° < 120° f−p−ff−p−f angle of pf3 90° 109.5° < 109.5° 180° 120° < 120° h−c−hh−c−h angle of ch4 90° < 109.5° 180° 120° < 120° 109.5°