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?
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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
So mass of sulphur = 6.116g
The law is conservation of mass.
- 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)
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