An aqueous solution contains dissolved c6h5nh3cl and c6h5nh2. the concentration of c6h5nh2 is 0.50 m and ph is 4.20.

a. calculate the concentration of c6h5nh3 in this buffer solution.

b. calculate the ph after 4.0 g naoh(s) is added to 1.0 l of this solution. (neglect any volume change.)

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

Wind and moving water provide energy. chemical mechanical thermal none of the above

Who examines and coordinates the cleanup of polluted sites?