C13H19O2 = (12 * 13) + (1 *19) + (16 *2) = 156 + 19 + 32 = 207.
The formula is n = molar mass of molecular formular / molar mass of empirical formular. MM of molecular formula = 414.7 and of empirical formula =207
So n = 414.7 / 207 = 2.
So the true molecular formula is 2(C13H19O9) = C26H38O18.
Might be false
Hope so
So sorry if it is wrong
I think its a or b mainly a
Answer:

Explanation:
= Density of acetic acid = 
= Mass of acetic acid = 
= Volume
Density is given by

The volume of acetic acid is
.