That’s right! Wet cotton is necessary for the gas trap to be effective.
Now you're ready to measure out the necessary reagents. Write down the quantities in your lab notebook.
chalcone (1,3-diphenyl-2-propen-1-one)
10% palladium on carbon
Place these reagents in a long-neck round bottom flask along with 1 mL of methanol.
How much ammonium formate should you add?