To find the number of moles we start by calculating the molar mass: M(C2H5OH) = 2*M(C) + 6*M(H) + M(O) M(C2H5OH) = 2* 12.01 + 6* 1.008 + 16 M(C2H5OH) = 46.068g
This is mass of one mole of ethanol. Total mass of ethanol can be calculated by using formula: m = N * M Where: m = total mass N = number of moles M = molar mass
We rearrange formula for N: N = m / M N = 508 / 46.068 N = 11.03
