Tutor profile: Bryant L.
Subject: Organic Chemistry
Why does the tert-butyl substituent of tert-butylcyclohexane favor the equitorial position more than the axial position?
When in the axial position, the tert-butyl substituent exhibits large steric hindrance, as its electrons will repulse the electrons of the other hydrogens in axial position. Therefore, tert-butylcyclohexane favors having this bulky group in the equitorial position.
What is the molecular shape of NH3. Explain your answer.
Trigonal pyramidal. NH3 has a total of 8 valence electrons interacting (5 from Nitrogen, 1 from each Hydrogen). NH3 can be drawn with 3 single N-H bonds, with a free lone pair of electrons on the central nitrogen. This structure has 3 bonds and 1 lone pair of electrons on the central nitrogen, resulting in a trigonal pyramidal shape.
Two balls of equal mass are thrown with the same initial speed. Ball A is thrown straight up while Ball B is thrown at a 45 degree angle above the ground. Compare the ball's initial kinetic energy.
Both balls have the same initial kinetic energy, as the have the same speed and mass. We can mathematically confirm this with the kinetic energy equation, KE=(1/2)mv^2.
needs and Bryant will reply soon.