What is the molarity of a solution that contains 135g of ki in 4.0 l of solution?

Which of the following pressures is equal to 760 mm hg? 2.0 atm 101.3 pa 101,300 kpa 101,300 pa

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

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