After the end of fermentation, the density is determined to be 1.015 g/cm3. Before the fermentation started, the density of the wort had been measured at 1.075 g/cm3.

a) How much maltose is converted during the fermentation? (it is assumed that maltose is the only factor affecting density)

b) Calculate and compare the alcohol content of the brewed Christmas beer, both when the alcohol percentage is calculated from the amount of converted maltose (calculated in b)) and by using the generic factor of 7.36 given in the brewing kit from Nimbus (Alcohol vol% = (OG - FG) / 7.36), (OG: Original gravity, FG: Final gravity)

C) Explain why there is a difference between the two alcohol percentages and indicate which one you think best describes the actual alcohol content in the Christmas beer.