Hydrogen sulfide is composed of two elements: hydrogen and sulfur. In an experiment, 6.500 g of hydrogen sulfide is fully decomposed into its pure elements.
a. If 0.384 g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained?
b. What fundamental scientific law does this experiment demonstrate?
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a. To find the grams of sulfur obtained, we can subtract the grams of hydrogen obtained from the initial mass of hydrogen sulfide.
Initial mass of hydrogen sulfide = 6.500 g
Mass of hydrogen obtained = 0.384 g
Mass of sulfur obtained = Initial mass of hydrogen sulfide - Mass of hydrogen obtained
Mass of sulfur obtained = 6.500 g - 0.384 g
Mass of sulfur obtained = 6.116 g
Therefore, 6.116 grams of sulfur must be obtained.
b. The experiment demonstrates the Law of Conservation of Mass, which states that matter cannot be created or destroyed in a chemical reaction. In this experiment, the total mass of the hydrogen sulfide is equal to the sum of the masses of the hydrogen and sulfur obtained after decomposition.
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