PLEASE HELP match the following people with their contributions to chemistry.

1. Bohr
2. Dalton
3. Mendeleev

A. Developed an atomic theory that describes the characteristics of atoms.
B. Developed the periodic table of elements format we still use today.
C. Established that electrons exist in specific energy levels using the element hydrogen.

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Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.