Hi everyone, I'm having trouble with this question:
"Calculate the number of moles required to make 250ml of 100mM KMnO
4Give 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 KMnO
4 are required and you know the molecular mass, you should your previous answers to calculate what mass of KMnO
4 you require to make 250ml of 100 mM"
thank you for your time and again, any help would be so very much appreciated
Kindest regards
Ade