Prelab Questions 1

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Prelab Questions
1. If your room temperature is 30oC, find K. [0oC = 273K]
2. If the barometer in Chemistry lab shows 740 mm Hg, find the pressure in atm.[760 mm Hg = 1 atm]
3. A) A reaction of Mg with HCl produced 30 ml of H2. The pressure and temperature were 740 mm Hg 
and 25oC, respectively. Find mole of H2 gas produced. 
[R = 0.082 L. atm. K-1. mol-1]
B) If 0.035 g of Mg used in the above reaction (#3): 
(a) find mole of Mg used:
(b) write the balanced reaction of Mg with HCl:
(c) (using the reaction stoichiometry in b) find Theoretical Yield (TY) of H2:
(d) (using the data in 3A and 3B, determine % Yield (PY) of H2: 1