The two alternative chair conformations of cis-2-bromocyclohexanamine differ in their gibbs free energy. using the data for δg (axial-equatorial) for monosubstituted cyclohexanes at room temperature (25ºc): axial → equatorial group δg° (kj/mol) group δg° (kj/mol) -0.8 -5.9 -2.4 -7.3 -3.9 1,2-gauche 3.8 calculate the absolute value of the difference in the gibbs free energy between the alternative chair conformations. kj/mol which group in this compound is in axial position in the energetically preferred chair conformation?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

The table below shows the acceleration of gravity on different bodies in the solar system. on which body would a 10 kg lamp has the most gravitational potential energy when lifted to a height of 2 m? a. earth b. mars c. neptune d. uranus

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?