an amount of nitrogen undergoes a physical change and increases its volume. What can be known about this physical change? The boiling point of the nitrogen increased. The mass of nitrogen increased. The color changed. The density changed.

The physical change would be the shape and size. And when you boil it it will only physical change.

-Zayn Malik

Aconductor easily transfer heat

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.