Finding the Required Dilution to produce a working solution. CHEMISTRY HELP?

Posted on 2016-03-04 18:48:00 in Chemistry by TELLY

Just getting stuck on this question and need some help. I don t know how to find the required dilution to produce the desired working solution. All I can find is the M1V1=M2V2 equation but Im pretty sure I have all the components for that equation so there is nothing to find? Please correct me if I m wrong (which is very likely) 
thank you in advance 

A10 Litre stock solution of 5.0 molL-1 NaOH is provided. Calculate the required dilution to produce a 500ml working solution at a concentration of 250mmolL-1

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