Calculate the frequency of thę light absorbed by a hydrogen atom during a transition of its electron from the n = 1 to the n =
3 principal energy level. Recall that for hydrogen En = -2.18 x
10-18 J(1/12) and (n = 6.63 x 10-34 Jo s).

What are the major products produced in the combustion of c10h22 under the following conditions? write balanced chemical equations for each. a. an excess of oxygen b. a slightly limited oxygen supply c. a very limited supply of oxygen d. the compound is burned in air

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

How can the periodic table be used to predict the behavior of elements?