Answer :
Answer:0.50
Explanation:In carrying out multiplication/division, the answer cannot have more significant figures than either of the original numbers.
mL=*10E-3=*0.010L(2 significant figures)
500=3 significant figures
500mL=(500E-3)L=500*0.010L=0.50
N/B:500E-3 =500 raised to the power of -3.