Deja caer un borrador, unas llaves y una hoja papel desde la atura de tu hombro. Observa como caen. ¿Cuánto tiempo tardan en caer? ∙ Problema.- Cuando se deja libre un cuerpo, se cae. ∙ Peguntas: 1.- ¿Porque caen unos cuerpos más rápidos que otro? 2.- ¿Por qué caen unos cuerpos en línea recta y otros parecen flotar?

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

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.