146. Predict the molecular structure, bond angles, and polarity (has a net dipole moment or has no net dipole moment) for each of
the following compounds.
a. SeCl4
d. CBr4
b. SO2
e. IF3
c. KrF4
f. CIFs

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