Please help!! A sample of H2 was collected over water for use in future chemical analyses. A sample of 91.67 mL of H2 was collected over water at 33.77∘C. Total pressure in the collection vessel was 750.37 mmHg. (The vapor pressure of water at this temperature is 39.416 mmHg.) What was the mass of H2 collected?
mH2 = ???
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The equilibrium constant kc for the reaction 2 nocl(g) → 2 no(g) + cl2(g) is 0.453 at a certain temperature. a mixture of nocl, no, and cl2 with concentrations 1.30, 1.20, and 0.600 m, respectively, was introduced into a container at this temperature. which of the following is true? 1. no apparent reaction takes place. 2. [cl2] = 0.30 m at equilibrium. 3. nocl(g) is produced until equilibrium is reached. 4. [nocl] = [no] = [cl2] at equilibrium. 5. cl2(g) is produced until equilibrium is