A mixture of nitrogen gas and hydrogen gas reacts in a closed container to form ammonia, NH3 (g). The reaction ceases before either reactant has been totally consumed. At this stage 1.2 mol nitrogen gas, 1.2 mol hydrogen gas, and 1.2 mol ammonia are present.
How many moles of N2, and H2 were present originally?

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explanation:

explanation:

crosscutting concepts have application across all domains of science. as such, they are a way of linking the different domains of science. they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.