Ammonia burns in oxygen to form nitrogen monoxide and water according to the following reaction. How much heat is released if 47.9g ammonia is completely reacted with oxygen? H rxn= -902 kJ 4NH3 (g) + 5O2(g) —->4NO (g) + 6H2O (g)

What does the cell nucleus do or, how does it function?

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?