A pure sample of atomic gas has atoms with six principal quantum numbers that can yield several emission lines. What is the number of possible electron shell transitions for which energy is radiated? (Hint: if an electron has jumped form n = 1 to n = 6, it can have these transitions: n=6 to n=5, n=6 to n=4, n=6 to n=3, n=6 to n=2, n=6 to n=1. That's 5 of them – can you find the rest? Remember, the electron didn't have to jump all the way to the n=6 level to start out with.)

A. 9
B. 12
C. 14
D. 15

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.