marissalynn marissalynn 06-08-2019 Chemistry contestada which reaction is a single replacement reaction? a. 2H2 + O2 -> 2H2O b. 2H2O2 -> 2H2O + O2 c. KOH + HCI -> KCI + H2O d. Cu + 2AgNO3 -> 2Ag + Cu(NO3)2 i’ll mark brainliest!