Is 0.5 mg equal 0.50 mg?

1 gram* * * * *No. 1 mg!

Two

m = 10^-3 0,5 mg = 0,5 * 10^-3 mg = 0,0005 mg

0.5g=500mg

1mg=1000microgramsso 0.5x1000=500 micrograms