Predict whether S for each reaction would be greater than zero, less than zero, or too close to zero to decide. a. H2(g)+Cl2(g)→2HCl(g)
b. 2H2O2(l)→2H2O(l)+O2(g)
c. CO(g)+3H2(g)→CH4(g)+H2O(g)
d. CH4(g)+2O2(g)→CO2(g)+2H2O(g)
e, 2SO3(g)→2SO2(g)+O2(g)

10. translate each of the following chemical equations into a sentence. a. 2 zns(s) + 3 o2(g) -> 2 zno(s) + 2 so2(g) b. cah2(s) + 2 h2o(l) -> ca(oh)2 (aq) + 2 h2(g)

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?