mrsclnantambu8604 mrsclnantambu8604 06-03-2024 Physics contestada The half life of a first order reaction is 6 hours. How long will it take for the concentration of reactant to change from 0.8 M to 0.25 M ? A. 1.07 hour B. 5.1 hour C. 2.7 hour D. 10.07 hour