Answer:
Approximately , assuming that all sulfur in that coal was converted to .
Explanation:
Look up the relative atomic mass of and on a modern periodic table:
Convert the unit of the mass of coal to grams:
.
Mass of sulfur in that much coal:
.
The relative atomic mass of sulfur is . Therefore, the mass of each mole of sulfur atoms would be . Calculate the number of moles of atoms in that of sulfur:
.
Each molecule contains one sulfur atom. Therefore, assuming that all those (approximately) of sulfur atoms were converted to molecules through the reaction with , (approximately) of molecules would be produced.
Calculate the mass of one mole of molecules:
.
The mass of that of molecules would be:
.