Assuming your average walking speed is 1.4 m/s, what time should you leave your house to arrive at school (0.84 km away) at 7:15?

6:50

Explanation:

I think that is correct is use the math correctly u could get 6:50 like i got or 7:00.

7:05

Explanation:

1.4 m/s=0.0014 km/s

0.84/0.0014=600

600 seconds=10 mins

7:05

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.