Consider the following balanced reaction between hydrogen and nitrogen to form ammonia: 3h2(g) + n2(g)→2nh3(g) how many moles of nh3 can be produced from 19.0 mol of h2 and excess n2?

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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.