Calculate the whole-number ratio of staggered to eclipsed conformers that are present at room temperature. Use the Actual G˚ barrier to rotation of -12,133.6J/mol to solve for Keq in the equation G˚= -RTln Keq. You must work with temperature in K and energy in joules. (R = 8.314 J•K-1•mol-1; T = 25 ºC = 298 K)

The ratio of staggered to eclipsed conformers is 134

Explanation:

It is possible to determine the ratio of staggered to eclipsed conformers of a reactant, using the equilibrium:

Staggered ⇄ Eclipsed

Keq = [Eclipsed] / [Staggered]

That means Keq is equal to the ratio we need to find:

Using:

G˚= -RTln Keq

Where G° = -12133.6J/mol

R is gas constant: 8.314J/molK

T is absolute temperature: 298K

-12133.6J/mol= -8.314J/molK*298K ln Keq

4.8974 = ln Keq

134 = Keq = [Eclipsed] / [Staggered]

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the pseudoscience are like beliefs, theories, or like practices that are considered scientific