Chemistry questions below! (●'◡'●)

(1) • Balanced Equation : 2HgO (s) ---> 2 Hg (l) + O₂ (g)

• Line a is represented by activation energy, or the smallest amount of energy needed for molecules to undergo a chemical reaction.

• Activated complex is the intermediate state during the conversion of reactants into products. In this case it is represented by Hg----O-----O----Hg. The dashed lines indicate that the bond between Hg and O are breaking and their length is increasing and the dashed line between oxygen atoms indicate that the bond is decreasing and bond formation is taking place.

• This reaction is endothermic as the energy of reactants is smaller than the energy of products.

(2) • Balanced Equation : CH₃Br + OH⁻ ---> CH₃OH + Br⁻

• The hydroxide ion reacts with the bromomethane, resulting in a double replacement reaction. The 'CH₃' in 'CH₃Br' joins with the hydroxide ion to form CH₃OH, while the Br breaks off as an ion.

• Take a look at the energy diagram below.

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.