What information is important to include when you are describing the weather?

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.

How many moles does 80.0 h2o respresent

What factor besides temperature affects the boiling point of water? a. mass b. number of moles c. volume d. pressure