Use bond enthalpies to estimate ∆Hrxn for the Haber process below in which nitrogen from the air is ‘fixed’ into a usable form. Compare this with ∆Hrxn calculated from ∆Hºf, which is –46.19 kJ per mol of NH3(g). If there is a difference, why is there a difference? Which do you expect to be more accurate and why? N2(g) + 3H2(g) → 2NH3(g)

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions

Ok, so i have 2 questions. try to answer them both: (the topic is fire) 1) how can you represent the chemical reaction of fire? 2) what kind of bond is formed in this chemical reaction