... is 10g/ trial and 25mL for vinegar. The ziploc bag has a volume of 750mL (0.75L). The density of the vinegar is 1.05g/mL. He also gave an info 5% Vvinegar/V (5mlCH3COOH/100mLsolution). I don't really know where to start. I know that the formulas that we have to use is PV=nRT but I really got no idea where to start. Also which are the limiting and excess reagent?