Without consulting tables of ΔHf°, ΔS°, or ΔGf°, predict the temperature dependence of favorability for each of the two reactions given. Enter an answer for each reaction. 2 NO2(g) → N2O4(g) always favored favored at high temperatures favored at low temperatures C5H12(g) + 8 O2(g) → 5 CO2(g) + 6 H2O(g) always favored favored at high temperatures favored at low temperatures

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o