The element sodium reacts explosively with water and the element chlorine is a yellowish-green poisonous gas. Then chemically combined, sodium and chlorine form
nonexplosive, nonpoisonous table salt. Explain how this can be

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: