# Hydrogen Sulfide Is Composed Of Two Elements Hydrogen And Sulfur. In An Experiment

In an experiment, 6.500g of hydrogen sulfide is fully decomposed into its elements.

If 0.384 g of hydrogen are obtained in this experiment how many grams of sulfur must be obtained, what law is demostrated by this, and how is it explained by Dalton's atomic theory?

jeew-m | Certified Educator

From the law conservation of mass

mass of H_2S = mass of hydrogen + mass of sulphur

Mass of sulphur = mass of H_2S-mass of hydrogen

= 6.500g-0.384g

= 6.116g

So mass of sulphur = 6.116g

The law is conservation of mass.

In Doltans atomic theory he sates;

• All atoms of a given element are identical in mass and properties.

(all hydrogen in `H_2S` have same mass per atom and all S in `H_2S` have same mass per atom)

• Compounds are formed by a combination of two or more different kinds of atoms.

(`H_2S` is formed by H and S)

• A chemical reaction is a rearrangement of atoms.

(`H_2S` is formed by a chemical reaction of H and S and the arrangement of atoms will be changed in this reaction)