Assume that a system has a very large number of energy levels given by the formula εl=ε0l2εl=ε0l2 with ε0=1.25×10−22Jε0=1.25×10−22J, where ll takes on the integer values 1, 2, 3, . . . . Assume further that the degeneracy of a level is given by gl=2lgl=2l.
Calculate the ratio n2/n1 at 250. K.

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these

Why is it possible for different microorganisms to extract energy not only from carbohydrates and other biological molecules but from a large variety of substances?

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.