A police officer is chasing a purse snatcher down a street. the thief start 9 meter ahead of the officer and can run 20 meters in 4 seconds (5m/s).The police officer can run 32 meter in 4 seconds (8m/s).How long will it take the officer catch the thief ??

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.

i can ! i just need to know what the paragraph is! : p

we need the questions , i may then you.

hurricanes form in warm water