10.A balloon has an internal pressure of 2 atm and a volume of 150 mL. If you decrease the pressure to 1.5 atm, what is the resulting volume?
a. 0.02 mL
b. 112.5 mL
c. 200 mL
d. 450 mL

Based on the equation and the information in the table, what is the enthalpy of the reaction?

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms