If the rate constant for a base-catalyzed second-order ester hydrolysis reaction is 0.20 L mol-1 s-1, the half-life (in s) of the ester (Given [ester]0 = [base]0 = 0.05 mol L-1) would be closest to:

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?