For 200.0 mL of a buffer solution that is 0.3081 M in CH3CH2NH2 and 0.2781 M in CH3CH2NH3Cl, calculate the initial pH and the final pH after adding 0.0200 mol of NaOH(Kb=5.6⋅10−4).

Why are gamma rays not affected by a magnet as they pass over it? gamma rays are composed of only energy. gamma rays do not have enough mass to be affected. gamma rays do not have the right electrical charge to be affected. gamma rays move too fast for anything to affect their pathway.

How does a hydroelectric power plant converts energy into energy.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?