How much does 1 mole of a substance weigh?
. o a. equal to its atomic number
• o b. 1 a. m.u.
• o c. 1 gram
. o d. equal to its atomic mass

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.