When hydrogen chloride reacts with sodium sulfide to form hydrogen sulfide gas and sodium chloride, the reaction is as
follows:
2HCl (aq) + Na2S (aq) H2S (g) + 2NaCl
What volume of hydrogen sulfide gas will be collected if
39.0 grams of sodium sulfide are reacted?
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Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work