I am doing a gizmo and need help badly, this is what is on the worksheet. Can someone please help me, I am struggling a lot. Thank you.

6. Practice: Solve each of the following problems using dimensional analysis (or another method). Show your work. (Use a periodic table to look up the necessary atomic masses.)
A. 75 g KMnO4 = molecules KMnO4
B. 7.23 × 10 24Al atoms = grams Al
C. 9.23 × 10 23Au atoms = moles Au
D. 125 g H3PO4 = molecules H3PO4
E. 0.75 moles CO2 = total atoms