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When ammonium nitrate (NH4NO3) dissolves in water, the process is endothermic (∆H=26.4 kJ/mol).  Despite being energetically unfavorable, NH4NO3 dissolves readily in water. Why?

The vapor pressure of pure water at 25 °C is 23.8 mmHg. If a nonvolatile solute is added to pure water at this temperature, which of the following may be the resulting vapor pressure?

A 3.00 L sample of an ideal gas in a closed container at 25.0 ºC and 76.0 torr is heated to 300 ºC. What is the pressure (in torr) of the gas sample after heating?

A thin glass tube 1m long is filled with Ar gas at 1 atm and the ends are stoppered with cotton plugs: HCl gas is introduced at one end of the tube, and simultaneously NH3 gas is introduced at the other end.  When the two gases meet, a solid ring of NH4Cl is formed. At which location: a, b, or c (noted above with arrows) does this ring form?

Which IM Forces exist between two HBr molecules?

In the resonance form of ozone (O3) shown below, what is the formal charge on the oxygen atom notated with an arrow?

Which of these compounds expected to have the highest boiling point?

The benzene molecule (C6H6) can be represented as two equivalent resonance structures (A) and (B): Which statement below about benzene is false?

A gas that has all the properties of Kinetic Molecular Theory (KMT) is classified as an Ideal Gas. Which of the gases below would show the smallest deviation from Ideal Gas behavior?

What will happen to the pressure of a gas if you double the temperature and double the number of moles of gas at a fixed volume?