Question

-log[7.1x10^-3]

Answer 1

log(a*b)=log(a)+log(b)

-log(7.1x10^-3)= - [log(7.1)+log(10^-3)]

log(10^-3)= -3

-log(7.1x10^-3)= - [log(7.1)+log(10^-3)]=- [log(7.1)-3]= - log(7.1)+3= 3-log(7.1)