An initial mixture of nitrogen gas and hydrogen gas is reacted in a rigid container at a certain temperature by the reaction

3H2(g) +N2(g) <=> 2NH3(g)
At equilibrium the concentrations are [H2]=5.0 M, [N2]= 8.0M, [NH3]=3.0M
What were the concentrations of nitrogen gas and hydrogen gas that were reacted initially.

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

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?

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?