The following Question is based on the information below: Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2):

CaC2 (s) + 2 H2O (g) → Ca(OH)2 (s) + C2H2 (g)

4.4980798

8.996159

17.992319

72.190892

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