1. Calculate the numbers of moles of 2-butanol that needed to dissolved in ethenol(125gms) just to form 12 m 2 butanol soln also find out mass of 2-butanol ?
2. Using a solution of ethanol in water is formed by dissolving 80.6 mL of ethanol that has density = 0.79 g/cm3 and amount of water to produce a solution of 250 mL, now find out the molarity of the ethanol (C2H5OH) in this solution?