C117 and M211

Hey guys

im back. I took the ALEKS math placement test last week and took it at school in other classes and at lunch and I made a score of 84. Also, I am looking to place into C117. there is a placement exam for this class, and last time i had chem was sophomore year and unfortunately it wasnt ap chem. basically how hard is the placement exam and what are some ways that i can study for it to ensure placement into C117. also do i have to take it before june 1st.

thanks
institute

i would appreciate an answer.