Given: f(x)=3x−7, g(x)=2x2−3x+1, h(x)=4x+1, k(x)=−x2+3

Find: (g−k)(x)

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

What was bohr’s contribution to the planetary model