150 ml of a 3 M KCL solution is diluted w/ 500 mL of distilled water. The the resulting solution is stirred and 300 mL are poured out of the beakr. what is the molarity of the remaining solution. a.3 x 150/500 b.3 x 500/150 c.3 x 300/150 d. 3 x 150/300 e 150 x 3/650 ok so the 300ml that is poured out is pretty much negligable....so i thought you would just do M1V1=M2V2 and the answer would be A....but that is not the case for some reason.....in theis one they did M1V1/(V1+V2)....which would be E WHY IS THIS?!??!?!?!? why did they add both the ml together.....i can kind of see why but now i am really confused.....when do I add the volumes together....and wehn do i do straight up M1V1=M2V2 by the information they gave me...bc a lot of questions when they give u both the volumes and one of the molar concentration u just plug it in....u dont add the 2 volumes for V2...PLEASE HELP and if im missing something here can u please give me an example of what to do when?