Consider the following reaction sequence in which J, K, L and M are the major products. Given: Atomic mass (in amu): H : 1, C : 12, N : 14, O : 16, S : 32, Br : 80, Ba : 137.
In sulphur estimation by Carius method, the amount of BaSO₄ formed from 3.79 g of M is ____ g.