Codeine c18h21no3 is a weak organic base. a 5.0 x 10^-3 m solution of codeine has a ph of 9.95. calculate the value of kb for this substance. what is the pkb for this base?

Evaluate this exponential expression,8. (2 + 3)2 – 42

What three natural resources are found in the great lakes region

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?