How Do You Convert 20mL of a Solution to Moles?

[jjjackso89]

I am way confused

I have 20mL of solution I(with a minus) and I need to convert it to moles

If anybody knows how to do this could you please show me. Thanks

 

[Pengwuino]

You either need to know the molarity of the substance or what the density of it is.

 

[daveb]

Do you mean you have 20mL of liquid iodine?