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Barometer Mercury Eudiometer by yre19594

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									    Barometer                                          Mercury Eudiometer
                                                         1.       2.        3.

                           The normal                                                    Patm = 760mm Hg
                                                   H2
                           pressure due to
                           the atmosphere                                                Pgas1 = 760mmHg
                           at sea level
                           can support a                                                 Pgas 2 = 760mm Hg -_____
                           column of
                           mercury that is                      50                       Pgas3 = 760mm Hg +_____
                                                  Hg
                           760 mm high                          mm



                                                                                 30
                                                                                 mm


   Closed- end     Manometer                                               Open-end     Manometer

   P gas= ______________                           Pgas = _________________           Pgas______________




                                             ΔH                                                         ΔH
                                             150                                                        130
                        ΔH                   mm                                                         mm
                        200
                        mm




                                                        Pgas < Patm                        Pgas > Patm
                                                        Pgas = Patm - ΔH                   Pgas = P atm + ΔH




Standard Temperature and Pressure- STP

P = 1 atmosphere = 760 torr = 101.3 kPa
T = 0°C= 273 Kelvin      Kelvin = C + 273 °C = Kelvin - 273
Gas law problems require that temperature be in KELVIN!
The standard molar volume of an ideal gas is 22.42 liters @ STP

								
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