1. Using the given image arrange the following acids in increasing order of their strength and give a suitable reason. HF, HCl, H3PO4, CH3COOH, H2CO3
2. Write equilibrium equation for the following:
C6H5NH + H2O ↔ C6H5NH2+ + OH-
HCOOH + H2O ↔ H3O+ + HCOO-

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

Newtons second law deals most cosely with

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