[CH 1020] - Final Exam Guide - Everything you need to know! (45 pages long)

I need ACS past test of physical chemistry in 2016 or 2017. I had got a study guide, but there is no 2016 or 2017 exam.

67. Calculate the mass (in g) of each sample. a. 5.94 x 1020 SO3 molecules b. 2.8 X 1022 H2O molecules c. 1 glucose molecule (CH 200)

This is part of my study guide for my Organic 2 lab final and I really need help with these questions that I'm stuck on. Please help me