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### A chemist finds that 30.82 gof nitrogen will reac…

04:22
Manhattan College

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Problem 12

Hydrogen sulfide is composed of two elements: hydrogen and sulfur. In an experiment, 6.500 g of hydrogen sulfide is fully decomposed into its elements. (a) If 0.384 g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained? (b) What fundamental law does this experiment demonstrate?

(a) 6.116 $\mathrm{g}$
(b) Law of conservation of mass.

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## Video Transcript

doing problem. 12 Trapped, too, and chemistry. Central signs Sergeant so far is composed of two elements. Hodgins Sulfur to me. Experiment six and doesn't experiment. 6.5 years of grounds of heart and so far is fully decomposed. Intelligence. It's a 0.384 grams hydrants obtains experiment. Haven't gramps sulfur must be contained. Must be obtained. And it's very simple. We did 6.50 minus three 0.384 And that's going tio the equal No. Six 0.1 116 grams and because it hardened sulphur, decomposing the hydrogen and sulphur than the sum of the mass of hydrogen and sulfur needs to equal the original mass of hydrogen sulfide. And be this as this represents the law of conservation of Mass. When you do reaction like let's say H s decomposes into as plus age then and the mass you it have on the left should equal to mass you have on the right eight