In the given depiction of a substance, each sphere represents a chlorine atom. What is the formula of this substance

Label a-f based on the table using c for concentrated and d for dilute

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Draw two cyclic constitutional isomers of cis-1