When hydrochloric acid is poured over potassium sulfide, 42.9 mL of hydrogen sulfide gas is produced at
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When hydrochloric acid is poured over potassium sulfide, 42.9 mL of hydrogen sulfide gas is produced at a pressure of 752 torr and 25.8 °C. Write an equation for the gas-evolution reaction and determine how much potassium sulfide (in grams) reacted.
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