Which of the following often causes market failure that is, causes markets to fail to estasblish fair prices and use resources efficiently or properly

a: surpluses
b: shortages
c: monopolies
d: competition

It would be a monopoly because in a monopoly good and services are provided by one producer and there is no competition. 

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.

Molarity is moles of solute over liters of solution. idk if that is what you are talking about, but you can convert moles of solute to grams of solute using dimensional analyzes by using molar mass found on the periodic table.