Sciencemadness Discussion Board

Could somebody please help me to convert these units? (Parts to Moles)

gorgeousgeorge - 9-3-2019 at 12:09

I'm reading an old document that refers to its units as parts and I'm unsure how to convert these to moles/grams/ml

It speaks about 106 parts ethanol, 2 parts glacial acetic acid, 5 parts catalyst etc, etc...

Would anyone be able to clarify this?

Dan Vizine - 9-3-2019 at 16:12

parts by weight

j_sum1 - 9-3-2019 at 17:07

You have a recipe with "parts" -- which basically boils down to a ratio -- presumably a ratio by mass. (Ratio by volume is also possible if all quantities are liquids -- which is what happens in cocktail recipes.)


Unfortunately,you cannot convert this to a specific mass since no mass information is given.
You can specify your own total mass and then use the ratio to work out a mass for each component. Then convert to moles at your leisure.