Reacting (2R)−2−pentanol with HBr leads to the formation of equal amounts of (2R)−2−bromopentane and (2S)−2−bromopentane. Draw a stepwise mechanism for the reaction that is consistent with this observation.

Calculate the number of molecules present in 0.750 mol of mgo.

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?