1.00 MOL OF HC2H3O2

What about it? One mol of HC2H3O2 (I suppose that is acetic acid) has a molar mass of about 60 and a Ka of 1.8 x 10^-5

To determine the mass of 1.00 mole of HC2H3O2, we need to know the molar mass of the compound. The molar mass is simply the sum of the atomic masses of all the atoms in the molecule.

The chemical formula of acetic acid (HC2H3O2) tells us that it contains 2 carbon (C) atoms, 2 hydrogen (H) atoms, and 4 oxygen (O) atoms.

The atomic masses of carbon, hydrogen, and oxygen are approximately 12.01 g/mol, 1.01 g/mol, and 16.00 g/mol, respectively. By adding up the masses of all the atoms, we can calculate the molar mass of acetic acid.

Molar mass (HC2H3O2) = (2 x atomic mass of C) + (3 x atomic mass of H) + (2 x atomic mass of O)
= (2 x 12.01 g/mol) + (3 x 1.01 g/mol) + (2 x 16.00 g/mol)
= 24.02 g/mol + 3.03 g/mol + 32.00 g/mol
= 59.05 g/mol

Therefore, 1.00 mole of HC2H3O2 has a mass of 59.05 grams (rounded to two decimal places).