The molar mass of a compound is the sum of the atomic masses of all the atoms in the compound. The atomic masses of the elements in chloral hydrate (C2H3Cl3O2) can be found on the periodic table.
The molar mass of chloral hydrate can be calculated as follows:
Molar mass = (2 x 12.01 g/mol) + (3 x 1.01 g/mol) + (3 x 35.45 g/mol) + (2 x 16.00 g/mol)
Molar mass = 24.02 g/mol + 3.03 g/mol + 106.35 g/mol + 32.00 g/mol
Molar mass = 165.40 g/mol
Therefore, the molar mass of chloral hydrate is 165.40 g/mol.