Answer
The sum of the masses of the products equals the sum of the masses of the reactants. 6.500 g = 0.384 g + 6.116 g.
Work Step by Step
Postulate 1 of Dalton's Atomic theory states that "All matter is made of atoms. Atoms are indivisible and indestructible." This means matter cannot be created nor destroyed, so chemical reactions will produce products with the same mass as the mass of the reactants. The decomposition of 6.500 g of hydrogen sulfide yields 0.384 g of hydrogen and 6.116 g of sulfur. This fits Dalton's theory because 6.500 g = 0.384 g + 6.116 g.
