If the heat involved in a chemical reaction has a negative sign,
OA) heat is lost to the surroundings.
OB) heat is gained from the surroundings.
OC) no heat is exchanged in the process.

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.