Athermometer is placed in a beaker full of water that has been sitting on the lab table for a few hours. the beaker is placed on a ring stand and heated over a bunsen burner for 4 minutes. after 4 minutes, the temperature is taken again. find the temperature change of the water if the temperature of the room is 26°c.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Give the orbital configuration of the phosphorus (p) atom.

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