For which of the following would ∆S most likely have a value very close to zero?
1. 2 H2O(ℓ) → 2 H2(g) + O2(g)
2. CO2(g) → CO2(s)
3. KOH(s) + NH4Cl(s) →
NH3(g) + H2O(ℓ) + KCl(aq)
4. CH4(g) + 2 O2(g) →
CO2(g) + 2 H2O(ℓ)
5. CO(g) + NO2(g) →
CO2(g) + NO(g)

Supongamos que estás estudiando dos estrellas. ambas estrellas tienen la misma magnitud aparente, pero la estrella a tiene una magnitud absoluta mayor que la estrella b. ¿que puedes decir acerca de la distancia a la tierra de estas dos estrellas?

Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together