For the following reaction, 8.94 grams of nitrogen gas are allowed to react with 1.17 grams of hydrogen gas. nitrogen (g) + hydrogen (g)> ammonia (g) What is the maximum amount of ammonia that can be formed?

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.