We were preparing Alkene from Alcohol & were asked to calculate percentage yield. We used 13.5 ml Cyclohexanol with 13.5 ml water & 7ml Sulfuric acid. To calculate % yield,i need theoretical mass.. So i was calculating no.of moles of cyclohexanol & cyclohexene (the product) to get the theoretical mass. No of moles of cylcohexanol = m/molar mass mass = 13.5 ml x 0.926 g/ml (density) = 12.987 g No.of moles of cyclohexanol = 12.987/100.16 = 0.136 moles No.of moles of cyclohexne = no.of moles of cyclohexanol = 0.136 moles (from stoichiometry) Theoretical mass of cyclohexene = n x M =0.136 x 82.14 = 11.17104 g Is this calculation correct?