Calculate the mass of Na2CO3 needed to prepare a 15.00 mM solution with a volume of 500.0 mL. (Na2CO3

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this

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.