In the reaction h2so4 + 2 naoh -> na2so4 + 2h2o, an equivalence point occurs when 29.43 ml of 0.1973 m naoh is added to a 32.42 ml portion of h2so4. what is the [h2so4]?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3