this is the question:

predict the ethanol percentage in vodka sample (0.7mL) and provide a uncertainty in the predicted value ?

the vodka sample was combined with a 40% 1-propanol solution, we used 0.7mL 1-propanol and used 0.7mL of vodka, according to the GC Plot that we got,

the ethanol in Vodka The 1-propanol

Area % = 9.883 Area % = 7.264

Height (µV.Min) = 1178.4 Height (µV.Min) = 734.5

Area (µV.Min) = 12.7 Area (µV.Min) = 9.3

Retention time = 1.09Min Retention time = 1.2

so from here were do i even start, since i need the (v/v)% ethanol

the equation for (v/v)% = (Volume of solute)/ (Total Volume of solution)

but i cant use this since i dont know the volume of ethanol in vodka at 0.7mL

maybe somebody can point in the right direction on how to solve this

Thx