In the above example, the 9.012 represents the O atomic weight
O atomic number
O chemical symbol
O number of electrons

The density would be 1.622

What do you need with it’s not a question your just stating what it says

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.