Molar mass - Chemistry Exam tommorow PLZ HELP PLZ!! :(?

I know what molar mass is, I know how to find it...but I hardly know the formulas and where to use them? Also Im stuck on this question... Formula: N = N / Na ... Calculate the amount of copper atoms (mol) represented by 3.10 x 10^23 copper atoms , answer: n = 3.01 x 10^23 / 6.02x10^23 = 0.500... show more I know what molar mass is, I know how to find it...but I hardly know the formulas and where to use them?

Also Im stuck on this question... Formula: N = N / Na ... Calculate the amount of copper atoms (mol) represented by 3.10 x 10^23 copper atoms , answer: n = 3.01 x 10^23 / 6.02x10^23 = 0.500 mol


IM TOTALLY CONFUSED ! PLEASE HELPP MEE :(
2 answers 2