Doubt by ADITI SINGH

Q . A 1st order reaction has aspecific reaction rate of 10^-2 per sec. how much time wii it take for 20g of the reactant to reduce to 5g?

     (a) 346.5 sec    (b) 693.0 sec      (c) 236.8 sec        (d)138.6 sec

Answers

Answer by Shraddha