Draw the structure of (1e,4r)-1,4-dimethylcyclodecene. higher priority groups the e isomer has two higher priority groups on opposite sides. the z isomer has two on the same side when placing the lowest priority group away from you, the r isomer will have the remaing groups in clockwise order (1e,4r)-1,4-dimethylcyclodecene will have 10 carbon atoms in its parent chain chs groups are located on carbon atoms 1,4.

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

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e