How many protons do you think are dissociable from propionic acid and butyric acid

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.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Acompound has the molecular formula c3h8. which class of organic compounds does it belong to?