Asecond order reaction of the type a+b> p was carried out in a solution that was initially .075 mol dm-3 in a and .03 mol dm-3 in b. after 1 hour, the concentration of a had fallen to .02 mol dm-3. a. calculate the rate constant. b. what is the half life of the reactant? answers: a. 16.2 dm3mol-hr-, 4.5e-3 dm3mol-s- b. 5.1e3s, 2.1e3 s

What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml

The element that has the greatest electronegativity is

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°