Hi everyone, I'm having trouble with this question:
"Calculate the number of moles required to make 250ml of 100mM KMnO4
Give your answer in moles to two significant figures omitting the units"
I didn't do A-Level chemistry only Biology, and I've watched a few videos and read a few articles on how to get the atomic mass etc and it's embarrassing as to why I don't quiet know what this question is asking of me. I know the molecular mass is 158.
I'm sorry to ask such a basic question. one part that i'm confused upon is the 100mM is that 0.1?
Any help would be very much appreciated as I also need to answer the sister question which is
"Now that you know how many moles of KMnO4
are required and you know the molecular mass, you should your previous answers to calculate what mass of KMnO4
you require to make 250ml of 100 mM"
thank you for your time and again, any help would be so very much appreciated