What is the principal quantum number of the electron in 2s orbital?

A.
n=4

B.
n=1

C.
n=2

D.
n=3

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

Identify a specific example for each type of technology

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?