Jawabanmu

2014-06-25T16:19:24+07:00
C2H5OH=(2 x AR C) + (5 x AR H) + (1 x AR O) + (1 x AR H)
             =(2 x 16) + ( 5 x 1) + (1 x 16) + (1 x 1)
             =24 + 5 + 16 + 1
             =46 gram / mol
n = massa / M = 75 / 46 = 1,6304