Which city (or cities) tends to have the highest concentrations of nitrogen dioxide?

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

kdkdkrnmcnc

explanation:

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14 days is the half-life of phosphorus-32

i believe the answer is true.