Here are the notes on volume and moles and solving combined mole problems.
102218 Notes Moles and Volume and combined moles

CW/HW: Due Tues., 10.23.18
CW 3 –Volume of a Gas and the Mole

CW 4 Combined mole problems

Here is a tutorial if the concept of moles has you confused.
Mr Guch’s Moles Tutorial

More Mr Guch’s Moles Tutorial

Practice, practice, practice
Mr Guch’s Practice Moles Worksheets w/ answers