Discuss the action of sodium with a) Ammonia b) non-metals

How many atoms are there in 5.70 mol of mg

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.

Define the kinetic molecular theory