Name:  ______________________________                                          period:  _______

Ch. 9 & 13  stoichiometry & gas  test [50 points]       Honors Chemistry

 

1. At STP,  30.0 L CH3 CH2 OH (g) + 10.0 L O2 (g) ->  __ grams CO2 (g) +  H2 O   [15 points]

 

2.  A 1.5 L container at 30.0 ºC has 1.0 g H2 , 10. g N2 , and 25 g O2 . [15 points]
          a. What is the total pressure (in atm) in the container ?

b. What is the partial pressure (in atm) of O2 ?

c. What is the mole fraction of O2 ?

 

3. What is the mass of the precipitate formed by mixing aqueous solutions containing 100.0 g silver nitrate and 100.0 g sodium carbonate ?  [10 points]

 

4. What is the % yield in the chemical reaction: excess N2   +  5.0 g H2    -->   20.0 g NH3 ?  [10 points]