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)

Will mark brainliest 26. which of these statements are true? (3 points) a. gases are compressible b. gases fill their containers completely c. the pressure of a gas is independent of the temperature d. gases have mass e. gases exert pressure f. the pressure of a gas is dependent on the volume g. gas pressure results from the collisions between gas particles h. gases have a definite volume and shape

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

How many grams are in 68.2 molecules of br2?