Which segments represent changes in potential energy of the molecules in the substance?
check all that apply.

a-b

b-c

c-d

d-e

e-f

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

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

Why do cells appear different in distilled water than they do in 10% salt water?