2) Draw a qualitative graph, plotted total potential energy ot two atoms vs. internuclear distance for two bromine atoms that approach each other and form a covalent bond. a) Why is it not energetically favorable for the two atoms to be to close? b) What does the zero energy line mean?

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I do not understand it

Please answer the following. a) Sodium nitrate dissolves endothermically. Describe what is happening in terms of energy in the bond-making steps of this reaction. b) Potassium hydroxide dissolves exthermically. Describe what is happening in terms of energy in the bond-making steps of this reaction.

Pls help ASAP. Pls do all asked questions.

Draw the main Lewis structure of NOF. Draw nonbonding electrons using the dot notation and bonding electrons as a bond.

When molecules absorb heat, there is an increase in A) the kinetic energy of the molecules. B) The potential energy of the molecules. C) The mass of the molecules. D) The bond energy of the molecules.

The molecule PH3 has… define total electrons, shape, molecule contains, triple bonds, and wether it is polar or non polar.

explain how the valence configurations of atoms are related to the atom's similarity in reactivity