A reaction is made up in the following way:
12 mL of 4.6 M acetone
+ 17 mL of 1.1 M HCl
+ 17 mL of 0.0054 M I2
+ 18 mL of water.
What was the inital concentration of I2 in the reaction mixture?
Express your answer as a decimal number (no exponents). Please include proper (abbreviated) units.